01860oam 2200553I 450 991070732270332120160728143224.0(CKB)5470000002464294(OCoLC)885121005(EXLCZ)99547000000246429420140802d1961 ua 0engurn||||||||||txtrdacontentcrdamediacrrdacarrierA constant-feed direct-current arc /by C.S. Annell and A.W. HelzWashington, D.C. :United States Department of the Interior, Geological Survey,1961.Washington, D.C. :Government Printing Office.1 online resource (iv, 231-251 pages) charts, photographsContributions to geochemistryGeological Survey bulletin ;1084-JAdditional title page description: "A study of methods for introducing samples into a d-c arc, accompanied by low fractional distillation."Title from title screen (viewed July 23, 2014).Includes bibliographical references (pages 250-251).Electric arcRocksAnalysisSpectrum analysisElectric arcfastRocksAnalysisfastSpectrum analysisfastElectric arc.RocksAnalysis.Spectrum analysis.Electric arc.RocksAnalysis.Spectrum analysis.Annell C. S.1397327Helz A. W.Geological Survey (U.S.),COPCOPOCLCOOCLCFGPOBOOK9910707322703321A constant-feed direct-current arc3458798UNINA