01073cam a22002651 4500 gs 35000188 DLC 20260227111339.0 790620s1935 dcu f000 0 eng gs 35000188 (OCoLC)5086724 DLC NFredU DLC QE75 .P9 no. 184 Leith, C. K. (Charles Kenneth), 1875-1956. Pre-Cambrian rocks of the Lake Superior Region; a review of newly discovered geologic features, with a revised geologic map / C. K. Leith, Richard J. Lund and Andrew Leith. Washington : U.S. Govt. Print. Off., 1935. ii, 34 p. fold. col. map (in pocket) fold. tables. ; 29 cm. Geological Survey (U.S.). Professional paper ; 184 At head of title: United States Department of the Interior. Bibliography: p. 26-31. Geology, Stratigraphic Precambrian. Geology Superior, Lake. Lund, Richard Jacob, joint author. Leith, Andrew, joint author. 27197 27197