The coal fields of the United States. General introduction, by Marius R. Campbell; Ohio, by J. A. Bownocker.
Material type:
TextSeries: U.S. Geological survey. Professional paper ; 100Publication details: Washington, U.S. Govt. print. off., 1929.Description: iv, 101 p. incl. tables, diagrs. IX pl. (incl. 7 fold. maps, (2 in pocket) fold. tab. 29 cmSubject(s): LOC classification: - QE75 .P9 no. 100
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At head of title: Department of the interior.
Issued also as House doc. no. 1806, 64th Cong., 2d sess.
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