Alden, William C. 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.

Part of illustrative matter in pocket.

"References cited": p. 191-192.

gs 54000249


Geology--Montana.
Physical geography--Montana.
Paleogeography.
Glaciers--Montana.

QE75 / .P9 no. 231

551.78

I 19.16:231