LEADER 01466oam 2200457 450 001 9910711566503321 005 20181102093617.0 035 $a(CKB)5470000002484385 035 $a(OCoLC)953259122 035 $a(OCoLC)995470000002484385 035 $a(EXLCZ)995470000002484385 100 $a20160708e19591949 ua 0 101 0 $aeng 135 $aurbn||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aLandslide problems of southwestern Colorado /$fby Helen D. Varnes 210 1$aWashington, D.C. :$cUnited States Department of the Interior, Geological Survey,$d1949. 210 3$aWashington, D.C. :$cUnited States Department of the Interior, Geological Survey,$d1959. 215 $a1 online resource (13 pages) $cillustrations, maps 225 1 $aGeological Survey circular ;$v31 300 $a"March 1949, reprinted 1959." 320 $aIncludes bibliographical references. 606 $aLandslides$zColorado 606 $aLandslides$2fast 607 $aColorado$2fast 615 0$aLandslides 615 7$aLandslides. 700 $aVarnes$b Helen D$g(Helen Dowling),$01411291 712 02$aGeological Survey (U.S.), 801 0$bCOP 801 1$bCOP 801 2$bOCLCO 801 2$bOCLCF 801 2$bOCLCA 801 2$bGPO 906 $aBOOK 912 $a9910711566503321 996 $aLandslide problems of southwestern Colorado$93502153 997 $aUNINA