Geology of the Bighorn Canyon-Hardin area, Montana and Wyoming : a description of the geography, stratigraphy, structure, geomorphology, and mineral resources of the area /
Richards, Paul W.(Paul William),1918-
Washington, [D.C.] : U.S. G.P.O.,
1955.
Eight folded leaves in pocket.
Includes index.
Bibliography: p. 88-90.
Geology
Geology