LEADER 02459oam 2200649 450 001 9910716614603321 005 20210914131957.0 035 $a(CKB)5470000002524023 035 $a(OCoLC)680247192$z(OCoLC)622216349$z(OCoLC)667889806$z(OCoLC)984765399 035 $a(OCoLC)995470000002524023 035 $a(EXLCZ)995470000002524023 100 $a20101110d1997 ua 0 101 0 $aeng 135 $aurbn||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aWater-quality assessment of the Potomac River Basin $eanalysis of available pesticide data, 1972-90 /$fby Humbert Zappia and Gary T. Fisher 210 1$aBaltimore, Maryland :$cU.S. Geological Survey,$d1997. 215 $a1 online resource (vi, 80 pages) $cmaps 225 1 $aWater-resources investigations report ;$v97-4051 300 $a"Prepared as part of the National Water-Quality Assessment (NAWQA) Program." 320 $aIncludes bibliographical references (pages 75-77). 517 $aWater-quality assessment of the Potomac River Basin 606 $aWater quality$zPotomac River Watershed 606 $aPesticides$xEnvironmental aspects$zPotomac River Watershed 606 $aFishes$xEffect of water pollution on$zPotomac River Watershed 606 $aPollution$xPhysiological effect$zPotomac River Watershed 606 $aFishes$xEffect of water pollution on$2fast 606 $aPesticides$xEnvironmental aspects$2fast 606 $aPollution$xPhysiological effect$2fast 607 $aUnited States$zPotomac River Watershed$2fast 615 0$aWater quality 615 0$aPesticides$xEnvironmental aspects 615 0$aFishes$xEffect of water pollution on 615 0$aPollution$xPhysiological effect 615 7$aFishes$xEffect of water pollution on. 615 7$aPesticides$xEnvironmental aspects. 615 7$aPollution$xPhysiological effect. 700 $aZappia$b Humbert$01400978 702 $aFisher$b Gary T. 712 02$aGeological Survey (U.S.), 712 02$aNational Water-Quality Assessment Program (U.S.) 801 0$bOCLCE 801 1$bOCLCE 801 2$bOCLCQ 801 2$bOCLCF 801 2$bOCLCQ 801 2$bOCLCO 801 2$bOCLCQ 801 2$bCOP 801 2$bOCLCA 801 2$bGPO 906 $aBOOK 912 $a9910716614603321 996 $aWater-quality assessment of the Potomac River Basin$93468902 997 $aUNINA