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100   $a20101109d1987      ua             0
101 0 $aeng
135   $aurbn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aPH measurement of low-conductivity waters /$fby Eurybiades Busenburg and L. Niel Plummer
210  1$aReston, Virgnia :$cU.S. Geological Survey,$d1987.
215   $a1 online resource (iv, 21 pages) $cillustrations
225 1 $aWater-resources investigations report ;$v87-4060
320   $aIncludes bibliographical references (page 21).
606   $aHydrogen-ion concentration$xMeasurement
606   $aHydrogen-ion concentration$xMeasurement$2fast
615  0$aHydrogen-ion concentration$xMeasurement.
615  7$aHydrogen-ion concentration$xMeasurement.
700   $aBusenberg$b Eurybiades$01413843
702   $aPlummer$b L. Niel
712 02$aGeological Survey (U.S.),
801  0$bOCLCE
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801  2$bCOP
801  2$bGPO
906   $aBOOK
912   $a9910715159503321
996   $aPH measurement of low-conductivity waters$93528643
997   $aUNINA