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100   $a20060320d2006      ua             0
101 0 $aeng
135   $aurmn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aField comparison of Optical and Clark cell dissolved oxygen sensors in the Tualatin River, Oregon, 2005$b[electronic resource] /$fby Matthew W. Johnston and John S. Williams
210  1$aReston, Va. :$cU.S. Geological Survey,$d2006.
215   $aiv, 11 pages $cdigital, PDF file
225 1 $aOpen-file report ;$v2006-1047
300   $aTitle from PDF title screen (viewed on Mar. 20, 2006).
320   $aIncludes bibliographical references (page 11).
606   $aWater$xDissolved oxygen$zOregon$zTualatin River$xMeasurement
606   $aWater quality$zOregon$zTualatin River$xMeasurement
615  0$aWater$xDissolved oxygen$xMeasurement.
615  0$aWater quality$xMeasurement.
700   $aJohnston$b Matthew W$01402488
701   $aWilliams$b John S$g(John Sutherland),$f1947-$01409650
712 02$aGeological Survey (U.S.)
801  0$bGIS
801  1$bGIS
801  2$bGPO
906   $aBOOK
912   $a9910695919503321
996   $aField comparison of Optical and Clark cell dissolved oxygen sensors in the Tualatin River, Oregon, 2005$93531517
997   $aUNINA