02020oam 2200529 450 991070397840332120150826164313.0(CKB)5470000002435955(OCoLC)882309801(OCoLC)651758147(EXLCZ)99547000000243595520140701d1906 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierEconomic geology of the Beaver Quadrangle, Pennsylvania (southern Beaver and northwestern Allegheny counties) /by Lester H. WoolseyWashington, D.C. :Department of the Interior, United States Geological Survey,1906.Washington :Government Printing Office.1 online resource (132 pages, VIII pages of plates) illustrations, mapsBulletin / United States Geological Survey ;no. 286Series A, Economic geology, 74Series B, Descriptive geology, 93Title from title screen (viewed June 27, 2014).Includes bibliographical references and index.Economic geology of the Beaver Quadrangle, Pennsylvania Mines and mineral resourcesPennsylvaniaAllegheny CountyMines and mineral resourcesPennsylvaniaBeaver CountyMines and mineral resourcesfastPennsylvaniaAllegheny CountyfastPennsylvaniaBeaver CountyfastMines and mineral resourcesMines and mineral resourcesMines and mineral resources.Woolsey Lester Hood1877-1961,1411187Geological Survey (U.S.),COPCOPOCLCOOCLCEOCLCFOCLCAGPOBOOK9910703978403321Economic geology of the Beaver Quadrangle, Pennsylvania3501720UNINA