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Edité par United States Geological Survey., 1976
Vendeur : Eryops Books, Stephenville, TX, Etats-Unis
No Binding. Etat : Very Good. Large folded sheet consisting of a geologic map superposed on topographic contours, three cross-sections, correlation of map units, a columnar section with description of units, a table summarizing fossil localities, and references cited; in printed envelope; ex-corporate library; in very good condition. Map.