01930oam 2200565 450 991070989370332120180720102419.0(CKB)5470000002473315(OCoLC)896810299(OCoLC)995470000002473315(EXLCZ)99547000000247331520141123d1975 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierGrade and tonnage relationships among copper deposits /by D.A. Singer, Dennis P. Cox, and Lawrence J. Drew ; Geochemical exploration techniques applicable in the search for copper deposits / by Maurice A. ChaffeeWashington :United States Department of the Interior, Geological Survey,1975.1 online resource (52 unnumbered pages) illustrationsGeological Survey professional paper ;907-A-BGeology and resources of copper depositsIncludes bibliographical references.Copper oresUnited StatesCopperAnalysisGeochemical prospectingCopperAnalysisfastCopper oresfastGeochemical prospectingfastUnited StatesfastCopper oresCopperAnalysis.Geochemical prospecting.CopperAnalysis.Copper ores.Geochemical prospecting.Singer D. A.1387101Cox Dennis P.Drew Lawrence J.Chaffee Maurice A.Geological Survey (U.S.),COPCOPOCLCOOCLCFGPOBOOK9910709893703321Grade and tonnage relationships among copper deposits3505049UNINA