Carbonizing Properties and Petrographic Composition of Lower Banner-bed Coal from Keen Mountain Mine, Buchanan County, Va: And the Effect of Blending this Coal with Pittsburgh-bed (Warden Mine) Coal
Arno Carl Fieldner ┬╖ Joseph Dana Davis ┬╖ Dewey A. Reynolds ┬╖ Ralph Emmet Brewer ┬╖ George C. Sprunk ┬╖ Lawrence Delos Schmidt
рмЬрм╛рмирнБрмЖрм░рнА 1940 ┬╖ U.S. Department of the Interior, Bureau of Mines