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100   $a20211117d2012      ua             0
101 0 $aeng
135   $aur|||||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aEstimates of tracer-based piston-flow ages of groundwater from selected sites $eNational Water-Quality Assessment Program, 2006-10 /$fby Stephanie D, Shapiro [and six others]
210  1$aReston, Virginia :$cU.S. Department of the Interior, U.S. Geological Survey,$d2012.
215   $a1 online resource (viii, 100 pages) $cillustrations (some color), color map
225 1 $aScientific investigations report ;$v2012-5141
300   $a"National Water-Quality Assessment Program."
320   $aIncludes bibliographical references (page 7).
517   $aEstimates of tracer-based piston-flow ages of groundwater from selected sites 
606   $aGroundwater flow$zUnited States
606   $aGroundwater$zUnited States$xDating
606   $aHeat as a groundwater tracer$zUnited States
615  0$aGroundwater flow
615  0$aGroundwater$xDating.
615  0$aHeat as a groundwater tracer
700   $aShapiro$b Stephanie Dunkle$01407479
712 02$aGeological Survey (U.S.),
712 02$aNational Water-Quality Assessment Program (U.S.)
801  0$bGPO
801  1$bGPO
801  2$bGPO
906   $aBOOK
912   $a9910716933903321
996   $aEstimates of tracer-based piston-flow ages of groundwater from selected sites$93490085
997   $aUNINA