Carbonizing Properties and Petrographic Composition of Sewell Bed Coal from Wyoming Mine, Wyoming County, W. Va., and the Effect of Blending this Coal with Alma Bed Coal

Arno Carl FieldnerJoseph Dana DavisWalter Alfred SelvigRalph Emmet BrewerClarence Raymond HolmesDewey A. ReynoldsGeorge C. Sprunk

出版	U.S. Government Printing Office, 1939
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