LEADER 01620nam 2200373Ka 450 001 9910691856903321 005 20080818150048.0 035 $a(CKB)5470000002348834 035 $a(OCoLC)244008015 035 $a(EXLCZ)995470000002348834 100 $a20080818d2002 ua 0 101 0 $aeng 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aDelineation of the Troy Bedrock Valley and particle-tracking analysis of ground-water flow underlying Belvidere, Illinois$b[electronic resource] /$fby P.C. Mills, K.J. Halford, and R.P. Cobb ; in cooperation with the Illinois Environmental Protection Agency, U.S. Environmental Protection Agency 210 1$aUrbana, Ill. :$cU.S. Dept. of the Interior, U.S. Geological Survey,$d2002. 215 $av, 46 pages $cdigital, PDF file 225 1 $aWater-resources investigations report ;$v02-4062 300 $aTitle from title screen (viewed Aug. 18, 2008). 606 $aGroundwater flow$zIllinois$zBelvidere$xMathematical models 615 0$aGroundwater flow$xMathematical models. 700 $aMills$b Patrick C$020443 701 $aHalford$b Keith J$01387248 701 $aCobb$b R. P$01399376 712 02$aIllinois.$bEnvironmental Protection Agency. 712 02$aUnited States.$bEnvironmental Protection Agency. 712 02$aGeological Survey (U.S.) 801 0$bGPO 801 1$bGPO 906 $aBOOK 912 $a9910691856903321 996 $aDelineation of the Troy Bedrock Valley and particle-tracking analysis of ground-water flow underlying Belvidere, Illinois$93464488 997 $aUNINA