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001 9910716920403321
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035   $a(EXLCZ)995470000002526995
100   $a20211122d2011      ua             0
101 0 $aeng
135   $aurmn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aRecent (2008-10) concentrations and isotopic compositions of nitrate and concentrations of wastewater compounds in the Barton Springs zone, south-central Texas, and their potential relation to urban development in the contributing zone /$eby Barbara J. Mahler [and three others]
210  1$aReston, Virginia :$cU.S. Department of the Interior, U.S. Geological Survey,$d2011.
215   $a1 online resource (vi, 39 pages) $cillustrations (some color), color maps
225 1 $aScientific investigations report ;$v2011-5018
300   $a"In cooperation with the City of Austin, City of Dripping Springs, Barton Springs/ Edwards Aquifer Conservation District, Lower Colorado River Authority, Hays County, and Travis County,"
320   $aIncludes bibliographical references (pages 36-39).
517   $aRecent 
606   $aSewage
606   $aWater$xPollution$zTexas$zBarton Springs/Edwards Aquifer Conservation District
606   $aCommunity development, Urban$xEnvironmental aspects$zTexas$zBarton Springs/Edwards Aquifer Conservation District
615  0$aSewage.
615  0$aWater$xPollution
615  0$aCommunity development, Urban$xEnvironmental aspects
700   $aMahler$b B. J$g(Barbara June),$f1959-$01382534
712 02$aGeological Survey (U.S.),
712 02$aAustin (Tex.)
712 02$aDripping Springs (Tex.)
712 02$aBarton Springs/Edwards Aquifer Conservation District (Tex.)
712 02$aLower Colorado River Authority.
712 02$aHays County (Tex.)
712 02$aTravis County (Tex.)
801  0$bGPO
801  1$bGPO
906   $aBOOK
912   $a9910716920403321
996   $aRecent (2008-10) concentrations and isotopic compositions of nitrate and concentrations of wastewater compounds in the Barton Springs zone, south-central Texas, and their potential relation to urban development in the contributing zone$93474646
997   $aUNINA