Rotary drilling holes in coalbeds for degasification [electronic resource] / by Joseph Cervik, H.H. Fields, and G.N. Aul.
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Format: | Government Document Electronic eBook |
Language: | English |
Published: |
[Pittsburgh, Pa.?] :
U.S. Dept. of the Interior, Bureau of Mines,
[1975]
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Series: | Report of investigations (United States. Bureau of Mines) ;
8097. |
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Internet
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Call Number: |
HE 20.7131:8097
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HE 20.7131:8097 | Available |