LANDIS, E. R. Uranium content of ground and surface watters in a part of the Central great plains / by E. R. Landis. -- Washington : United States Government Printing Office, 1960 - P. 223-258 + map. -- (Geological Survey Bulletin ; 1087-G). Subjects--Topical Terms: Yacimientos de Uranio Universal Decimal Class. No.: 553.495