Geology, mining, and methane content of the Freeport and Kittanning coalbeds in Indiana and surrounding counties, Pa. /
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Format: | Government Document Book |
Language: | English |
Published: |
[Washington] :
Dept. of the Interior, Bureau of Mines,
1979.
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Series: | Report of investigations (United States. Bureau of Mines) ;
8406. |
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Physical Description: | 35 pages : illustrations, maps ; 27 cm. |
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Bibliography: | Bibliography: pages 33-35. |