01632oam 2200469 450 991071174420332120190107084412.0(CKB)5470000002486630(OCoLC)953208921(OCoLC)995470000002486630(EXLCZ)99547000000248663020160707d1980 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierFour reference soil and rock samples for measuring element availability in the western energy regions /by J.G. Crock and R.C. Severson[Reston, Virginia] :United States Department of the Interior, Geological Survey,1980.1 online resource (iii, 16 pages) illustrationsGeological Survey circular ;841Includes bibliographical references (page 16).SoilsWest (U.S.)AnalysisSoilsTrace element contentWest (U.S.)SoilsAnalysisfastUnited States, WestfastSoilsAnalysis.SoilsTrace element contentSoilsAnalysis.Crock J. G.1382001Severson R. C(Ronald Charles),1945-Geological Survey (U.S.),COPCOPOCLCOOCLCFOCLCAGPOBOOK9910711744203321Four reference soil and rock samples for measuring element availability in the western energy regions3547379UNINA