Verlag: United States Geological Survey., 1969
Anbieter: Eryops Books, Stephenville, TX, USA
No Binding. Zustand: Very Good. Large folded sheet consisting of a geologic map superposed on topographic contours and with structure contours, a cross-section, a columnar section with description of units, a measured section with description of coal beds, a discussion of coal beds with a table summarizing coal analyses, and references cited; in printed envelope; ex-corporate library; in very good condition. Map.