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|Material Type:||Conference publication|
|All Authors / Contributors:||
William Edward Schevill; G Carleton Ray; Kenneth S Norris; United States. Department of the Interior.
Conference sponsored by the U.S. Dept. of the Interior and others.
|Credits:||Conference sponsored by the U.S. Dept. of the Interior and others.|
|Description:||x, 419 pages illustrations 25 cm|
|Responsibility:||William E. Schevill, editor. G. Carleton Ray and Kenneth S. Norris, consulting editors.|