01915oam 2200541 450 991070400330332120160315103140.0(CKB)5470000002437626(OCoLC)883336897(EXLCZ)99547000000243762620140710d1936 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierGeology and mineral resources of the Butler and Zelienople quadrangles, Pennsylvania /by G.B. Richardson[Washington, D.C.] :United States Department of the Interior, Geological Survey,1936.Washington :United States Government Printing Office.1 online resource (v, 93 pages, 8 pages of plates) illustrations, maps (some color)Bulletin / United States Department of the Interior, Geological Survey ;873Title from title screen (viewed July 9, 2014).Includes bibliographical references and index.Butler and Zelienople quadrangles, PennsylvaniaGeologyPennsylvaniaMines and mineral resourcesPennsylvaniaGeologyfastMines and mineral resourcesfastPennsylvaniafastGeologyMines and mineral resourcesGeology.Mines and mineral resources.Richardson G. B(George Burr),1872-1949,1386521Geological Survey (U.S.),COPCOPOCLCOOCLCAOCLCFTRAALGPOOCLCQGPOBOOK9910704003303321Geology and mineral resources of the Butler and Zelienople quadrangles, Pennsylvania3545849UNINA