01394nam 2200385 a 450 991069921220332120230902162113.0(CKB)5470000002401788(OCoLC)495695188(EXLCZ)99547000000240178820100104d1981 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierBiota and biological parameters as environmental indicators[electronic resource] /edited by Phillip E. Greeson[Reston, Va.] :U.S. Dept. of the Interior, Geological Survey,[1981]1 online resource (v, 24 pages) illustrationsBriefing papers on water qualityGeological survey circular ;848-BTitle from .djvu (USGS, viewed Aug. 17, 2009).Includes bibliographical references.Briefing papers on water quality.Circular (Geological Survey (U.S.)) ;848-B.Water quality biological assessmentWater quality biological assessment.Greeson Phillip E1404378Geological Survey (U.S.)GPOGPOBOOK9910699212203321Biota and biological parameters as environmental indicators3541570UNINA