The coal fields of the United States. General introduction /

Bibliographic Details
Main Author:	Campbell, Marius R. (Marius Robinson), 1858-1940 (Author)
Format:	Government Document eBook
Language:	English
Published:	Washington : Department of the Interior, United States Geological Survey, 1917.
Series:	Professional paper (Geological Survey (U.S.)) ; no. 100-A.
Subjects:	Coal > United States. Coal. United States.
Online Access:	https://purl.fdlp.gov/GPO/gpo79353

Available Online