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.

Evans: US Documents (Annex 5th floor)