Cressman, Earle Rupert 1923- Geology of the Georgetown Canyon-Snowdrift mountain area, Southeastern Idaho / by Earle R. Cressman. -- Washington : United States Government Printing Office, 1964 - 105 p. + map. -- (Geological Survey Bulletin ; 1153). Subjects--Topical Terms: GeologíaIdaho Universal Decimal Class. No.: 55(796)