Stratigraphic studies of the Silurian rocks of Pennsylvania; Part 2 : Subsurface maps of the Silurian Rocks of western Pennsylvania and adjacent areas

Harrisburg, Pa. Commonwealth of Pennsylvania Dept. of Internal Affairs, 1965. Cardboard Covers. Brown Folio w/ black binding; 8 p., 9 fold. maps. 46 cm. Very Fine ;ex library w/accession stamp. Item #50016

Pennsylvania. Bureau of Topographic and Geologic Survey Special bulletin 11; Geology, Stratigraphic -- Silurian.  Geology -- Pennsylvania.  Geology -- New York (State) .

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