01773oam 2200505 450 991071144370332120181005093849.0(CKB)5470000002483605(OCoLC)953268930(OCoLC)944376810(OCoLC)995470000002483605(EXLCZ)99547000000248360520160708d1952 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierGeochemical association of niobium (columbium) and titanium and its geological and economic significance /by Michael Fleischer [and three others]Washington, D.C. :United States Department of the Interior, Geological Survey,1952.1 online resource (13 pages)Geological Survey circular ;225"This report concerns work done on behalf of the U.S. Atomic Energy Commission and is published with the permission of the Commission."Includes bibliographical references (pages 9-10).Geochemical association of niobium NiobiumTitaniumNiobiumfastTitaniumfastNiobium.Titanium.Niobium.Titanium.Fleischer Michael1908-1998,1405714Geological Survey (U.S.),U.S. Atomic Energy Commission,COPCOPOCLCOOCLCEOCLCAGPOBOOK9910711443703321Geochemical association of niobium (columbium) and titanium and its geological and economic significance3502172UNINA