U.S. G.P.O. ; For sale by the Books and Open-File Reports Section, U.S. Geological Survey,
Whipkey, C. E.
Cavaroc, Victor V.
Flores, Romeo M.
Evolution of sedimentary basins--Powder River Basin ; ch. D
U. S. Geological Survey bulletin ; 1917-D
Uplift of the Bighorn Mountains, Wyoming and Montana--a sandstone provenance study
Uplift of the Bighorn Mountains, Wyoming and Montana--a sandstone provenance study
Uplift of the Bighorn Mountains, Wyoming and Montana--a sandstone provenance study