LEADER 02341oam 2200601 450 001 9910713901203321 005 20200819080813.0 035 $a(CKB)5470000002504677 035 $a(OCoLC)985370548 035 $a(OCoLC)995470000002504677 035 $a(EXLCZ)995470000002504677 100 $a20170503d2003 ua 0 101 0 $aeng 135 $aurbn||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aMethods of analysis by the U.S. Geological Survey National Water Quality Laboratory $edetermination of organophosphate pesticides in bottom sediment by gas chromatography with flame photometric detection /$fby Virendra K. Jha and Duane S. Wydoski 210 1$aDenver, Colorado :$cU.S. Department of the Interior, U.S. Geological Survey,$d2003. 215 $a1 online resource (vi, 30 pages) $cillustrations 225 1 $aWater-resources investigations report ;$v02-4222 320 $aIncludes bibliographical references (pages 30). 517 $aMethods of analysis by the U.S. Geological Survey National Water Quality Laboratory 606 $aRiver sediments$xAnalysis 606 $aWater$xPesticide content$xMeasurement 606 $aOrganophosphorus compounds$xAnalysis 606 $aGas chromatography 606 $aFlame photometry 606 $aFlame photometry$2fast 606 $aGas chromatography$2fast 606 $aOrganophosphorus compounds$xAnalysis$2fast 606 $aWater$xPesticide content$xMeasurement$2fast 615 0$aRiver sediments$xAnalysis. 615 0$aWater$xPesticide content$xMeasurement. 615 0$aOrganophosphorus compounds$xAnalysis. 615 0$aGas chromatography. 615 0$aFlame photometry. 615 7$aFlame photometry. 615 7$aGas chromatography. 615 7$aOrganophosphorus compounds$xAnalysis. 615 7$aWater$xPesticide content$xMeasurement. 700 $aJha$b Virendra K$g(Virendra Kumar),$f1946-$01399793 702 $aWydoski$b Duane S. 712 02$aGeological Survey (U.S.), 801 0$bCOP 801 1$bCOP 801 2$bOCLCO 801 2$bOCLCF 801 2$bGPO 906 $aBOOK 912 $a9910713901203321 996 $aMethods of analysis by the U.S. Geological Survey National Water Quality Laboratory$93465695 997 $aUNINA