Editore: United States Geological Survey., 1988
Da: Eryops Books, Stephenville, TX, U.S.A.
No Binding. Condizione: Very Good. Large folded sheet consisting of geologic map superposed on topographic contours, an index map showing the Virginia Dale Ring Structure, correlation of map units, a columnar section with description of units, and references cited; in printed envelope; ex-corporate library; in very good condition. Map.