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100   $a20161219d1994      ua             0
101 0 $aeng
135   $aurbn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aSources of trends in water-quality data for selected streams in Texas, 1975-89 water years /$fby Terry L. Schertz, Frank C. Wells, and Dane J. Ohe
210  1$aAustin, Texas :$cU.S. Geological Survey,$d1994.
215   $a1 online resource (v, 49 pages) $cillustrations, maps
225 1 $aWater-resources investigations report ;$v94-4213
320   $aIncludes bibliographical references (page 49).
606   $aWater quality$zTexas
606   $aWater quality$2fast
607   $aTexas$2fast
615  0$aWater quality
615  7$aWater quality.
700   $aSchertz$b Terry L.$01394273
702   $aWells$b Frank C.
702   $aOhe$b Dane J.
712 02$aGeological Survey (U.S.),
801  0$bCOP
801  1$bCOP
801  2$bOCLCO
801  2$bOCLCF
801  2$bOCLCA
801  2$bGPO
906   $aBOOK
912   $a9910713637603321
996   $aSources of trends in water-quality data for selected streams in Texas, 1975-89 water years$93539966
997   $aUNINA