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Bleeder system in virgin area in a Pittsburgh coalbed mine

Bibliographic Details
Main Author: Krickovic, Stephen.
Corporate Author: United States. Bureau of Mines.
Other Authors: Moore, T. D., Carpetta, J. E.
Format: Government Document Online Book
Language:English
Published: [Pittsburg, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1973]
Series:Report of investigations (United States. Bureau of Mines) ; 7805.
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Online Access:ONLINE VERSION
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