LEADER 02096oam 2200553I 450 001 9910704130503321 005 20151231082716.0 035 $a(CKB)5470000002438362 035 $a(OCoLC)885119610 035 $a(EXLCZ)995470000002438362 100 $a20140802d1956 ua 0 101 0 $aeng 135 $aurn|||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aThorium and rare-earth minerals in Powderhorn district, Gunnison County, Colorado /$fby J.C. Olson and S.R. Wallace 210 1$a[Washington, D.C.] :$cUnited States Department of the Interior, Geological Survey,$d1956. 210 2$aWashington :$cUnited States Government Printing Office. 215 $a1 online resource (iv, 693-723 pages, 2 pages of plates) $cmaps, charts 225 1 $aGeological Survey bulletin ;$v1027-O 225 1 $aA contribution to economic geology 300 $aTitle from title screen (viewed July 22, 2014). 300 $a"This report concerns work done on behalf of the U.S. Atomic Energy Commission and is published with the permission of the Commission." 320 $aIncludes bibliographical references (page 721) and index. 606 $aRare earth metals$zColorado$zGunnison County 606 $aThorium ores$zColorado$zGunnison County 606 $aRare earth metals$2fast 606 $aThorium ores$2fast 607 $aColorado$zGunnison County$2fast 615 0$aRare earth metals 615 0$aThorium ores 615 7$aRare earth metals. 615 7$aThorium ores. 700 $aOlson$b J. C$g(Jerry Chipman),$f1917-2013,$01392464 702 $aWallace$b S. R$g(Stewart R.),$f1919-2009, 712 02$aGeological Survey (U.S.), 712 02$aU.S. Atomic Energy Commission, 801 0$bCOP 801 1$bCOP 801 2$bOCLCO 801 2$bOCLCA 801 2$bOCLCF 801 2$bTRAAL 801 2$bGPO 906 $aBOOK 912 $a9910704130503321 996 $aThorium and rare-earth minerals in Powderhorn district, Gunnison County, Colorado$93484969 997 $aUNINA