Editore: United States Geological Survey., 1964
Da: Eryops Books, Stephenville, TX, U.S.A.
No Binding. Condizione: Very Good. Large folded sheet consisting of geologic map superposed on topographic contours, a cross-section, a columnar section, a stratigraphic column with description of units, and an explanation of economic geology; in printed envelope; ex-corporate library; small glue stain on envelope; o/w in very good condition. Map.