Cover image for Pre-Cambrian rocks of the Lake Superior Region; a review of newly discovered geologic features, with a revised geologic map
Pre-Cambrian rocks of the Lake Superior Region; a review of newly discovered geologic features, with a revised geologic map
Title:
Pre-Cambrian rocks of the Lake Superior Region; a review of newly discovered geologic features, with a revised geologic map
Author:
Leith, C. K. (Charles Kenneth), 1875-1956.
Publication Information:
Washington : U.S. Govt. Print. Off., 1935.
Physical Description:
ii, 34 pages : folded color map (in pocket) folded tables. ; 29 cm.
General Note:
At head of title: United States Department of the Interior.

Bibliography: p. 26-31.
Language:
English
Format :
Book