SCHNABEL, Robert W. Geology of the Burdock quadrangle fall river and custer counties South Dakota / by Robert W. Schnabel. -- Washington : United States Government Printing Office, 1963 - P. 191-215 + map. -- (Geological Survey Bulletin ; 1063-F). Subjects--Topical Terms: Dakota del SurYacimientos de Uranio Universal Decimal Class. No.: 553.495(783)