LEADER 01473nam 2200361 450 001 9910704476403321 005 20130404153042.0 035 $a(CKB)5470000002440928 035 $a(OCoLC)835671188 035 $a(EXLCZ)995470000002440928 100 $a20130404d2012 ua 0 101 0 $aeng 135 $aurcn||||||||| 181 $2rdacontent 182 $2rdamedia 183 $2rdacarrier 200 10$aQuality of surface-water runoff in selected streams in the San Antonio segment of the Edwards aquifer recharge zone, Bexar County, Texas, 1997-2012 /$fby Stephen P. Opsahl ; prepared in cooperation with the San Antonio Water System 210 1$aReston, Virginia :$cU.S. Department of the Interior, U.S. Geological Survey,$d2012. 215 $a1 online resource (iv, 19 pages) $ccolor illustrations 225 1 $aData series ;$v740 300 $aTitle from title screen (viewed on March 20, 2013). 320 $aIncludes bibliographical references (pages 17-19). 606 $aWater quality$zTexas$zBexar County 615 0$aWater quality 700 $aOpsahl$b Stephen P.$01388638 712 02$aGeological Survey (U.S.), 712 02$aSan Antonio Water System (Tex.), 801 0$bGPO 801 1$bGPO 906 $aBOOK 912 $a9910704476403321 996 $aQuality of surface-water runoff in selected streams in the San Antonio segment of the Edwards aquifer recharge zone, Bexar County, Texas, 1997-2012$93519976 997 $aUNINA