The Geology of Potter County by Andrew Sherwood; Report on the Coal Fields by Franklin Platt; with a colored geological map of the county, and two page plates of sections

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xvi, 121, [5] p., frontispiece map of Pennsylvania, 3 folded maps in pocket inside back cover; 22 cm. Black cloth with gilt-stamped spine title: "Penna. Second Geological Survey Potter County." "Second Geological Survey of Pennsylvania: Report of Progress in 1876-9. GGG." -- at head of title page. Folded maps are: Geological Map of Potter County, 1876 (in color) -- Sections in Western Potter County constructed by Chas. A. Ashburner -- Topographical Map of the Gaines Coal Basin from surveys in 1872 by Sanderson Smith. In Very Good Condition: faded spots along upper edges and upper spine; discoloration along upper edges of endpapers; otherwise, clean and tight; folded maps are clean and completely intact. N° de ref. del artículo 004550

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