Verlag: Ohio Division of Geological Survey, Columbus, Ohio, 1958
Zustand: very good. Report of Investigations No. 36 "The coal beds of the Pottsville formation have added much to the wealth of the State. They outcrop in 20 counties from Scioto and Lawrence on the Ohio River to Geauga in the northeast." DH1. softcover, binding very good, pages clean, illustrated, stamp front cover, 53 pages, 11" Tall.