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E-book

Clay veins : their occurrence, characteristics, and support

Publisher:
[Pittsburgh, Pa?] : U.S. Dept. of the Interior, Bureau of Mines, [1987]
Phys. Desc.:
19 pages : digital, PDF file
Electronic resource
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E-book

Geologic factors influencing the gas content of coalbeds in southwestern Pennsylvania

Publisher:
[Pittsburgh, Pa?] : U.S. Dept. of the Interior, Bureau of Mines, [1988]
Phys. Desc.:
26 pages : digital, PDF file
Electronic resource
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E-book

Influence of overlying strata on methane emissions in a northern West Virginia coal mine

Publisher:
[Pittsburgh, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1984]
Phys. Desc.:
14 pages : digital, PDF file
Electronic resource
Click for online content.