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035   $a(OCoLC)1051041772
035   $a(EXLCZ)995470000002473556
100   $a20180907d2018      ua             0
101 0 $aeng
135   $aur|||||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aWater-quality observations of the San Antonio segment of the Edwards Aquifer, Texas, with an emphasis on processes influencing nutrient and pesticide geochemistry and factors affecting aquifer vulnerability, 2010-16 /$fby Stephen P. Opsahl [and three others] ; prepared in cooperation with the San Antonio Water System
210  1$aReston, Virginia :$cU.S. Department of the Interior, U.S. Geological Survey,$d2018.
215   $a1 online resource (viii, 67 pages) $ccolor illustrations, color maps
225 1 $aScientific investigations report,$x2328-0328 ;$v2018-5060
320   $aIncludes bibliographical references (pages 61-67).
606   $aWater-supply$zTexas$zSan Antonio
606   $aWater quality$zTexas$zEdwards Aquifer$xMeasurement
606   $aWater$xPollution$zTexas$zEdwards Aquifer$xMeasurement
606   $aNutrient pollution of water$zTexas$zEdwards Aquifer
606   $aWater$xPesticide content$zTexas$zEdwards Aquifer
607   $aEdwards Aquifer (Tex.)
615  0$aWater-supply
615  0$aWater quality$xMeasurement.
615  0$aWater$xPollution$xMeasurement.
615  0$aNutrient pollution of water
615  0$aWater$xPesticide content
700   $aOpsahl$b Stephen P.$01388638
712 02$aGeological Survey (U.S.),
801  0$bGPO
801  1$bGPO
906   $aBOOK
912   $a9910709869903321
996   $aWater-quality observations of the San Antonio segment of the Edwards Aquifer, Texas, with an emphasis on processes influencing nutrient and pesticide geochemistry and factors affecting aquifer vulnerability, 2010-16$93475695
997   $aUNINA