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Proceedings Papers

Proceedings Volume Cover
1990 SEG Annual Meeting
September 23–27, 1990
San Francisco, California
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1990 SEG Annual Meeting
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.
Paper presented at the 1990 SEG Annual Meeting, San Francisco, California, September 1990.

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