02037oam 2200553 450 991070774840332120161108150630.0(CKB)5470000002467065(OCoLC)885121621(EXLCZ)99547000000246706520140802d1971 ua 0engurn||||||||||txtrdacontentcrirdacontentcrdamediacrrdacarrierCoal resources of Butler County, Pennsylvania /by Elmer D. Patterson and J.A. Van LieuWashington, D.C. :United States Department of the Interior, Geological Survey,1971.Washington, D.C. :Government Printing Office.1 online resource (iv, C1-C43 pages, 3 pages of pages) maps, chartsGeological Survey bulletin ;1143-CCoal resources of western PennsylvaniaTitle from title screen (viewed July 24, 2014)."Prepared in cooperation with the Pennsylvania Geological Survey."Includes bibliographical references (pages 41-43).Coal resources of western PennsylvaniaCoalGeologyPennsylvaniaButler CountyMines and mineral resourcesPennsylvaniaButler CountyCoalGeologyfastMines and mineral resourcesfastPennsylvaniaButler CountyfastCoalGeologyMines and mineral resourcesCoalGeology.Mines and mineral resources.Patterson E. D(Elmer Davisson),1404963Van Lieu J. A.Geological Survey (U.S.),Pennsylvania.Bureau of Topographic and Geologic Survey,COPCOPOCLCOOCLCFGPOBOOK9910707748403321Coal resources of Butler County, Pennsylvania3534744UNINA