Klepper, Montis Ruhl, 1915- Geology of the southern Elkhorn Mountains, Jefferson and Broadwater Counties, Montana / by M. R. Klepper, R. A. Weeks, and E. T. Ruppel. - Washington : U.S. Govt. Print. Off., 1957. - 82 p. : ill., maps (part col.) ; 29 cm. Part of illustrative matter folded in pocket. Bibliography : p. 77-78. LCCN: gs 58000164 Subjects--Topical Terms: Geology--Montana--Elkhorn Mountains Subjects--Geographic Terms: Elkhorn Mountains LC Class. No.: QE75 / .P9 no. 292 Dewey Class. No.: 557.86 Gov. Doc. Class. No.: I 19.16:292