01041cam a22002411 4500 gs 64000174 DLC 20260227111414.0 791108s1963 dcuab b f000 0 eng c gs 64000174 (OCoLC)5667292 U.S. Geol. Survey. Libr. OCl OCoLC ISS DLC QE75 .P9 no. 346 I 19.16:346/ Ross, Clyde P. (Clyde Polhemus), 1891- The Belt series in Montana; data on the Belt series in Montana, and related rocks, with a stratigraphic classification. With a geologic map compiled by Betty A. L. Skipp and a section on Paleontologic criteria by Richard Rezak. Washington, U.S. Govt. Print. Off., 1963. v, 122 p. illus., map, diagrs., tables and portfolio (5 fold. col. maps, col. diagr., table) 30 cm. Geological Survey (U.S.). Professional paper 346 Bibliography: p. 112-119. Geology Montana. Geology, Stratigraphic Precambrian. 29820 29820