LEADER 01437nam 2200385Ka 450 001 9910697311303321 005 20080819101127.0 035 $a(CKB)5470000002387823 035 $a(OCoLC)244097570 035 $a(EXLCZ)995470000002387823 100 $a20080819d2003 ua 0 101 0 $aeng 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aFrequency of debris flows in Grand Canyon$b[electronic resource] /$f[Robert H. Webb, Peter G. Griffiths, Tillie A. Klearman] ; prepared in cooperation with the Grand Canyon Monitoring and Research Center 210 1$a[Reston, Va.] :$cU.S. Dept. of the Interior, U.S. Geological Survey,$d[2003] 215 $a4 unnumbered pages $cdigital, PDF file 225 1 $aUSGS fact sheet ;$v065-03 300 $aTitle from title screeen (viewed on Aug. 18, 2008). 300 $a"August 2003." 320 $aIncludes bibliographical references (page [4]). 606 $aDebris avalanches$zArizona$zGrand Canyon 615 0$aDebris avalanches 700 $aWebb$b Robert H$0123725 701 $aGriffiths$b Peter G$091313 701 $aKlearman$b Tillie A$01390048 712 02$aGeological Survey (U.S.) 712 02$aGrand Canyon Monitoring and Research Center. 801 0$bGPO 801 1$bGPO 906 $aBOOK 912 $a9910697311303321 996 $aFrequency of debris flows in Grand Canyon$93442319 997 $aUNINA