LEADER 01939oam 2200529I 450 001 9910711959603321 005 20190314110920.0 035 $a(CKB)5470000002488495 035 $a(OCoLC)1083547087 035 $a(EXLCZ)995470000002488495 100 $a20190129d2015 ua 0 101 0 $aeng 135 $aur||||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aResults from laboratory and field testing of nitrate measuring spectrophotometers /$fby Teri T. Snazelle 210 1$aReston, Virginia :$cU.S. Department of the Interior, U.S. Geological Survey,$d2015. 215 $a1 online resource (v, 15 pages, 13 unnumbered pages) $cillustrations (some color) 225 1 $aOpen-file report,$x2331-1258 ;$v2015-1065 300 $aAlso available online in PDF format from the U.S. Geological Survey (http://pubs.er.usgs.gov/). 320 $aIncludes bibliographical references (page 15). 606 $aUltraviolet spectrometry$xInstruments$xTesting 606 $aSpectrometer$xTesting 606 $aHydrological instruments$xTesting 606 $aNitrates$xAnalysis 606 $aGroundwater$xPollution$xMeasurement 606 $aGroundwater$xPollution$2fast 606 $aNitrates$2fast 615 0$aUltraviolet spectrometry$xInstruments$xTesting. 615 0$aSpectrometer$xTesting. 615 0$aHydrological instruments$xTesting. 615 0$aNitrates$xAnalysis. 615 0$aGroundwater$xPollution$xMeasurement. 615 7$aGroundwater$xPollution. 615 7$aNitrates. 700 $aSnazelle$b Teri T.$01405409 712 02$aGeological Survey (U.S.), 801 0$bCOP 801 1$bCOP 801 2$bOCLCO 801 2$bOCLCF 801 2$bGPO 906 $aBOOK 912 $a9910711959603321 996 $aResults from laboratory and field testing of nitrate measuring spectrophotometers$93521513 997 $aUNINA