Published by United States Geological Survey., 1967
Seller: Eryops Books, Stephenville, TX, U.S.A.
No Binding. Condition: Very Good. Large folded sheet consisting of geologic map superposed on topographic contours, cross section, columnar section with description of units, explanation of economic geology, and references cited; in printed envelope; ex-corporate library; a couple of tears at top of envelope, o/w sheet in very good condition. Map.