Determining the source of longwall gob gas [microform] : Lower Kittanning Coalbed, Cambria County, PA / by William P. Diamond, James P. Ulery, and Stephen J. Kravits.
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| Format: | Government Document Microfilm Book |
| Language: | English |
| Published: |
Washington, D.C. (810 7th St., N.W., MS#9800, Washington 20241-0001) :
U.S. Dept. of the Interior, Bureau of Mines,
[1992]
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| Series: | Report of investigations (United States. Bureau of Mines) ;
9430. |
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