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Published by United States Geological Survey., 1973
Seller: Eryops Books, Stephenville, TX, U.S.A.
Map
No Binding. Condition: Very Good. Three (3) large folded sheets; consists of three geologic maps superposed on topographic contours, showing distribution of copper samples, histograms showing metal content in ppm, a columnar section, a discussion of economic geology, and references cited; ex-corporate library; in very good condition. Map.