The coal fields of the United States /

Bibliographic Details
Main Author:	Bownocker, J. A. (John Adams), 1865-1928
Other Authors:	Campbell, Marius Robinson, 1858-1940
Format:	Government Document Book
Language:	English
Published:	Washington : U.S. Govt. print. off, 1929.
Series:	U.S. Geological Survey professional paper ; 100.
Subjects:	Coal > Ohio. Coal > United States.

by Bownocker, J. A. (John Adams), 1865-1928, Clark, Frank R. (Frank Rinker), 1881-1974
Published 1917

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