Coal Resource Classification System of the U.S. Geological Survey
Wood, Gordon H., Jr, Thomas M. Kehn, M. Devereux Carter, and William C. Culbertson
Coal Resource Classification System of the U.S. Geological Survey Image Cover
Publisher:USGS
Place Published:Washington, DC
Genre:Mineral Resources
Series:Circ 891
Pages:65
Format:Paperback
Release:1983
Summary: