Rotary drilling holes in coalbeds for degasification [electronic resource] / by Joseph Cervik, H.H. Fields, and G.N. Aul.

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Main Author: Cervik, Joseph
Corporate Author: United States. Bureau of Mines
Other Authors: Fields, H. H., Aul, George N.
Format: Government Document Electronic eBook
Language:English
Published: [Pittsburgh, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1975]
Series:Report of investigations (United States. Bureau of Mines) ; 8097.
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Call Number: HE 20.7131:8097
HE 20.7131:8097 Available