U.S. Geological Survey Open-file Report 90-284
Online Version 1.0
By Gerald I. Evenden
Available for download as:
U.S. Department of the Interior, U.S. Geological Survey
URL: http://pubs.usgs.gov/of/1990/of90-284/index.html
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Last modified: 16:48:29 Fri 07 Sep 2001
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