Metalliferous deposits of the greater Helena mining region, Montana, by J.T. Pardee and F.C. Schrader.
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TextSeries: U.S. Geological survey. Bulletin 842Publication details: Washington, U.S. Govt. Print. Off., 1933.Description: xi, 318 p. illus., 47 pl. (part fold. incl. maps (3 in pocket) plans, diagrs. 23 cmSubject(s): LOC classification: - QE75 .B9 no. 842
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