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035   $a(EXLCZ)995470000002401788
100   $a20100104d1981      ua             0
101 0 $aeng
135   $aurbn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 00$aBiota and biological parameters as environmental indicators$b[electronic resource] /$fedited by Phillip E. Greeson
210  1$a[Reston, Va.] :$cU.S. Dept. of the Interior, Geological Survey,$d[1981]
215   $a1 online resource (v, 24 pages) $cillustrations
225 1 $aBriefing papers on water quality
225 1 $aGeological survey circular ;$v848-B
300   $aTitle from .djvu (USGS, viewed Aug. 17, 2009).
320   $aIncludes bibliographical references.
410  0$aBriefing papers on water quality.
410  0$aCircular (Geological Survey (U.S.)) ;$v848-B.
606   $aWater quality biological assessment
615  0$aWater quality biological assessment.
701   $aGreeson$b Phillip E$01404378
712 02$aGeological Survey (U.S.)
801  0$bGPO
801  1$bGPO
906   $aBOOK
912   $a9910699212203321
996   $aBiota and biological parameters as environmental indicators$93541570
997   $aUNINA