Preliminary Report on a Regional Stratigraphic Study of Devonian Rocks of Pennsylvania

Harrisburg, Pa.: Commonwealth of Pennsylvania Dept. of Internal Affairs, 1957. Brown Folio w/ black binding; 5 p., 7 fold. maps. 46 cm Very Fine; ex library w/ accession stamp. Cardboard Covers.

Pennsylvania. Bureau of Topographic and Geologic Survey; Special bulletin; 8; Standard Geology -- Pennsylvania -- Maps.  Geology, Stratigraphic -- Devonian.