Pre-Cambrian rocks of Gunnison river, Colorado, by J. Frederick Hunter.
Material type:
TextSeries: U.S. Geological survey. Bulletin 777Publication details: Washington, Govt. print. off., 1925.Description: vi, 94 p. illus, xv pl. (incl. fold. map (in pocket)) 23 cmSubject(s): LOC classification: - QE75 .B9 no. 777
At head of title: Department of the interior.
Issued also as thesis (Ph. D.) Johns Hopkins university, 1912.
Plates printed on both sides.
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