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035   $a(EXLCZ)995470000002373714
100   $a20070406d2006      ua             0
101 0 $aeng
135   $aurmn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 00$aRecent (2003-05) water quality of Barton Springs, Austin, Texas, with emphasis on factors affecting variability$b[electronic resource] /$fby Barbara J. Mahler ... [and others] ; in cooperation with the Texas Commission on Environmental Quality
210  1$aReston, Va. :$cU.S. Dept. of the Interior, U.S. Geological Survey,$d2006.
215   $a1 electronic text $cHTML file
225 1 $aScientific investigations report ;$v2006-5299
300   $aTitle from title screen (viewed on Apr. 5, 2007).
320   $aIncludes bibliographical references (pages 65-69).
517   $aRecent 
606   $aGroundwater$xPollution$zTexas$zAustin
606   $aWater quality$zTexas$zAustin
615  0$aGroundwater$xPollution
615  0$aWater quality
701   $aMahler$b B. J$g(Barbara June),$f1959-$01382534
712 02$aTexas Commission on Environmental Quality.
712 02$aGeological Survey (U.S.)
801  0$bGIS
801  1$bGIS
801  2$bGPO
906   $aBOOK
912   $a9910695808103321
996   $aRecent (2003-05) water quality of Barton Springs, Austin, Texas, with emphasis on factors affecting variability$93435645
997   $aUNINA