Published by United States Geological Survey (USGS, U.S.G.S.), 1974
Seller: Eryops Books, Stephenville, TX, U.S.A.
Map
No Binding. Condition: Very Good. Large folded sheet in printed envelope; includes a geologic map superposed on topographic contours, two cross-sections; a columnar section with description of units; projections of fold axes and structural elements; a discussion of geology, and references cited; ex-corporate library; light small smudge on upper corner (does not touch illustrations or text); o/w in very good condition. Map.