01512nam 2200385Ka 450 991069675110332120080714092430.0(CKB)5470000002381361(OCoLC)233823944(EXLCZ)99547000000238136120080714d1977 ua 0engtxtrdacontentcrdamediacrrdacarrierMethods of determining the orientations of bedrock fracture systems in southwestern Pennsylvania and northern West Virginia[electronic resource] /B.M. Bench, W.P. Diamond, and C.M. McCulloch[Washington, D.C.?] :U.S. Dept. of the Interior, Bureau of Mines,[1977]ii, 35 pages digital, PDF fileBureau of Mines report of investigations ;8217Title from title screen (viewed on July 11, 2008)."1977. "Coal mines and miningPennsylvaniaCoal mines and miningWest VirginiaCoal mines and miningCoal mines and miningBench B. M1389498Diamond W. P(William P.)1389496McCulloch C. M(Charles M.)1389497United States.Bureau of Mines.GPOGPOBOOK9910696751103321Methods of determining the orientations of bedrock fracture systems in southwestern Pennsylvania and northern West Virginia3445106UNINA