01108cam a22003011 4500 gs 54000249 DLC 20260227111402.0 780330s1953 dcua f000 0 eng gs 54000249 (OCoLC)3764093 DLC USlW ISS OCoLC DLC premarc QE75 .P9 no. 231 551.78 I 19.16:231 Alden, William C. (William Clinton), 1871- Physiography and glacial geology of western Montana and adjacent areas; a study of glacial features in the intermontane valleys and the drainage area of the upper Missouri and Columbia Rivers. Washington, U.S. Govt. Print. Off., 1953. v, 200 p. illus., plates, maps (2 fold., col.) 29 cm. Geological Survey (U.S.) Professional paper 231 Part of illustrative matter in pocket. "References cited": p. 191-192. Geology Montana. Physical geography Montana. Paleogeography. Glaciers Montana. 28885 28885