01206oam 2200373 450 991070861770332120170420132628.0(CKB)5470000002471053(OCoLC)983205562(EXLCZ)99547000000247105320170420d2013 ua 0engurcn|||||||||txtrdacontentcrdamediacrrdacarrierFluorine, fluorite, and fluorspar in central Colorado /by Alan R. WallaceReston, Virginia :U.S. Department of the Interior, U.S. Geological Survey,2013.1 online resource (v, 61 pages) color illustrations, color mapsScientific investigations report ;2010-5113Includes bibliographical references (pages 54-61).FluorineFluorsparColoradoFluorine.FluorsparWallace Alan R.1384123Geological Survey (U.S.),GPOGPOGPOBOOK9910708617703321Fluorine, fluorite, and fluorspar in central Colorado3458272UNINA