Geology and methane content of the upper Freeport coalbed in Fayette County, Pa. / by Peter F. Steidl.
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Format: | Government Document Book |
Language: | English |
Published: |
[Washington] :
Dept. of the Interior, Bureau of Mines,
1977.
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Series: | Report of investigations (United States. Bureau of Mines) ;
8226 r. |
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