LEADER 01707nam 2200409 a 450 001 9910700803303321 005 20110912151548.0 035 $a(CKB)5470000002412989 035 $a(OCoLC)751991499 035 $a(EXLCZ)995470000002412989 100 $a20110912d2011 ua 0 101 0 $aeng 135 $aurcn||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 00$aFactors affecting groundwater quality in the Valley and Ridge aquifers, eastern United States, 1993-2002$b[electronic resource] /$fby Gregory C. Johnson ... [and others] ; National Water-Quality Assessment Program 210 1$aReston, Va. :$cU.S. Dept. of the Interior, U.S. Geological Survey,$d2011. 215 $a1 online resource (x, 70 pages) $cillustrations (chiefly color), color maps 225 1 $aScientific investigations report ;$v2011-5115 300 $aTitle from title screen (viewed on Sept. 12, 2011). 320 $aIncludes bibliographical references (pages 58-64). 606 $aGroundwater$xQuality$zEast (U.S.) 606 $aGroundwater$xEnvironmental aspects$zEast (U.S.) 606 $aAquifers$xEnvironmental aspects$zEast (U.S.) 615 0$aGroundwater$xQuality 615 0$aGroundwater$xEnvironmental aspects 615 0$aAquifers$xEnvironmental aspects 701 $aJohnson$b Gregory C$01354062 712 02$aGeological Survey (U.S.) 712 02$aNational Water-Quality Assessment Program (U.S.) 801 0$bGPO 801 1$bGPO 906 $aBOOK 912 $a9910700803303321 996 $aFactors affecting groundwater quality in the Valley and Ridge aquifers, eastern United States, 1993-2002$93532475 997 $aUNINA