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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
Carbonizing properties and petrographic composition of Pocahontas no. 3-bed coal from Buckeye no. 3 mine, Wyoming County, W. Va., and of Pocahontas no. 4-bed coal from no. 4 mine, Raleigh County, W. Va.