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Analyses of Samples of Delivered Coal: Collected from July 1, 1915 to January 1, 1922, with a Chapter on the Tidewater Pool Classifications
Analyses of Alabama coals
Analyses of Utah coals
Analyses of Tennessee coals
Analyses of Missouri coals
Analyses of Indiana coals
Analyses of Oklahoma coals
Analyses of Arkansas coals
Analyses of Kansas coals / [by the U.S. Bureau of Mines].