LEWIS, Richard Q. Geology and Uranium deposits of Monument valley San Juan County, Utah / by Richard Q. Lewis and Donald E. Trimble. -- Washington : United States Government Printing Office, 1959 - P. 105-131 + map. -- (Geological Survey Bulletin ; 1087-D). Subjects--Topical Terms: UtahYacimientos de Uranio Universal Decimal Class. No.: 553.495(792)