Preliminary report on a regional stratigraphic study of Devonian rocks of Pennsylvania

Harrisburg, Pa. Commonwealth of Pennsylvania Dept. of Internal Affairs, 1957. Cardboard Covers. Brown Folio w/ black binding; 5 p., 7 fold. maps. 46 cm. Very Fine; ex library w/ accession stamp. Item #50015

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

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