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Methods of determining the orientations of bedrock fracture systems in southwestern Pennsylvania and northern West Virginia
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Published Year
1970-1979 (1)
Subject
Coal mines and mining--Pennsylvania (1)
Coal mines and mining--West Virginia (1) *
Mining geology (1)
Author
Bench, Bernard M. (1) *
Diamond, W. P. (1)
McCulloch, C. M. (1)
