01356nam 2200385 450 991070398500332120150824151128.0(CKB)5470000002435888(OCoLC)919094206(EXLCZ)99547000000243588820150824d1917 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierOil resources of black shales of the Eastern United States /George H. Ashley[Washington, D.C.] :Department of the Interior, United States Geological Survey,[1917]Washington :Government Printing Office.1 online resource (pages 311-333)Bulletin / Department of the Interior, United States Geological Survey ;641-LContributions to economic geology ;1916, part IIIncludes index.PetroleumGeologyEast (U.S.)Oil-shalesEast (U.S.)PetroleumGeologyOil-shalesAshley Geo. H(George Hall),1866-1951,1393966Geological Survey (U.S.),GPOGPOBOOK9910703985003321Oil resources of black shales of the Eastern United States3485127UNINA