Coal resource classification system of the U.S. Geological Survey /

Bibliographic Details
Main Author:	Wood, Gordon H. (Gordon Harry), 1919- (Author)
Format:	Government Document eBook
Language:	English
Published:	[Reston, Virginia] : U.S. Department of the Interior, U.S. Geological Survey, 1983.
Series:	Geological Survey circular ; 891.
Subjects:	Coal mines and mining > United States > Classification. Geological Survey (U.S.) Coal mines and mining. United States.
Online Access:	https://purl.fdlp.gov/GPO/gpo115885

Description
Physical Description:	1 online resource (vii, 65 pages) : illustrations, maps.
Bibliography:	Includes bibliographical references (pages 64-65).