01241oas 2200373 a 450 991069253150332120040729085918.0(CKB)5470000002354142(OCoLC)55692270ocm55692270(OCoLC)995470000002354142(EXLCZ)99547000000235414220040622a19949999 ua enguranu|||||txtrdacontentcrdamediacrrdacarrierThe mineral industry of Pennsylvania[electronic resource][Washington, D.C.] [U.S. Dept. of the Interior, Bureau of Mines]Description based on: 1994; title from title screen (viewed on June 17, 2004).Mineral industriesPennsylvaniaStatisticsPeriodicalsMines and mineral resourcesPennsylvaniaPeriodicalsStatistics.lcgftMineral industriesMines and mineral resourcesUnited States.Bureau of Mines.Geological Survey (U.S.)GPOGPODOCUMENT9910692531503321The mineral industry of Pennsylvania3433383UNINA