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.

By: Contributor(s): Material type: TextTextPublication details: Washington : U.S. Govt. Print. Off., 1935.Description: ii, 34 p. fold. col. map (in pocket) fold. tables. ; 29 cmSubject(s): LOC classification:
  • QE75 .P9 no. 184
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At head of title: United States Department of the Interior.

Bibliography: p. 26-31.

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