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100   $a20110414d2011      ua             0
101 0 $aeng
135   $aurcn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aEffects of natural and human factors on groundwater quality of basin-fill aquifers in the southwestern United States $econceptual models for selected contaminants /$fby Laura M. Bexfield [and four others]
210  1$aReston, Virginia :$cU.S. Department of the Interior, U.S. Geological Survey,$d2011.
215   $a1 online resource (viii, 90 pages) $ccolor illustrations, color maps
225 1 $aScientific investigations report ;$v2011-5020
300   $a"National Water-Quality Assessment Program."
320   $aIncludes bibliographical references (pages 88-90).
517   $aEffects of natural and human factors on groundwater quality of basin-fill aquifers in the southwestern United States 
606   $aGroundwater$xQuality$zSouthwestern States
606   $aWater quality$zSouthwestern States
606   $aGroundwater$xQuality$2fast
606   $aWater quality$2fast
607   $aUnited States$zSouthwestern States$2fast
615  0$aGroundwater$xQuality
615  0$aWater quality
615  7$aGroundwater$xQuality.
615  7$aWater quality.
700   $aBexfield$b Laura M.$01390175
712 02$aGeological Survey (U.S.),
712 02$aNational Water-Quality Assessment Program (U.S.)
801  0$bAZS
801  1$bAZS
801  2$bOCLCQ
801  2$bOCLCF
801  2$bOCLCQ
801  2$bOCLCA
801  2$bGPO
906   $aBOOK
912   $a9910716920103321
996   $aEffects of natural and human factors on groundwater quality of basin-fill aquifers in the southwestern United States$93452251
997   $aUNINA