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181   $ctxt$2rdacontent
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200 10$aNational Water-Quality Assessment Program$b[electronic resource] /$fby P.P. Leahy and T.H. Thompson
210  1$a[Reston, Va.] :$cU.S. Geological Survey,$d1994.
225 1 $aU.S. Geological Survey open-file report ;$v94-70
300   $aTitle from online title screen.
606   $aWater quality$zUnited States
615  0$aWater quality
700   $aLeahy$b P. Patrick$01384508
701   $aThompson$b T. H$g(Terry H.),$f1937-$01384509
712 02$aGeological Survey (U.S.)
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