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100   $a19980903d1999      ua             0
101 0 $aeng
181   $ctxt$2rdacontent
182   $cn$2rdamedia
183   $anc$2rdacarrier
200 10$aEnvironmental characteristics and water quality of hydrologic benchmark network stations in the midwestern United States, 1963-95 /$fby M. Alisa Mast and John T. Turk
210  1$a[Washington, D.C.] :$cU.S. G.P.O. ;$aDenver, CO :$cFree on application to the U.S. Geological Survey, Information Services,$d1999.
215   $ax, 130 pages $cillustrations, maps ;$d28 cm
225 1 $aU.S. Geological Survey circular ;$v1173-B
300   $aShipping list no.: 2000-0109-P.
311   $a0-607-92623-6 
320   $aIncludes bibliographical references (pages 112-117).
606   $aHydrology$zMiddle West$xHistory
606   $aWater quality$zMiddle West$xHistory
615  0$aHydrology$xHistory.
615  0$aWater quality$xHistory.
676   $a363.739/42/0978
700   $aMast$b M. Alisa$01385030
701   $aTurk$b John T$01385031
712 02$aGeological Survey (U.S.)
801  0$bDLC
801  1$bDLC
801  2$bGPO
801  2$bAGL
801  2$bBAKER
801  2$bBTCTA
801  2$bGPO
906   $aBOOK
912   $a9910689353003321
996   $aEnvironmental characteristics and water quality of hydrologic benchmark network stations in the midwestern United States, 1963-95$93432047
997   $aUNINA