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100   $a20210514d1999      ua             0
101 0 $aeng
135   $aur|||||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 12$aA probabilistic ecological risk assessment of zinc in surface waters of the Chesapeake Bay watershed$iFinal report /$fLenwood W. Hall, Jr., Mark C. Scott and William D. Killen
210  1$aAnnapolis, Maryland :$cPrinted by the U.S. Environmental Protection Agency for the Chesapeake Bay Program,$d1999.
215   $a1 online resource (vii, 91, 14 pages) $cillustrations, charts
225 1 $aCBP/TRS ;$v222/103
300   $a"May 1999."
300   $a"EPA 903-R-99-009"--Cover.
320   $aIncludes bibliographical references (pages 33-50).
606   $aZinc$xToxicology$zChesapeake Bay Watershed$vObservations
606   $aFreshwater organisms$xEffect of metals on$zChesapeake Bay Watershed$vObservations
606   $aMetals$xToxicology$zChesapeake Bay Watershed$vObservations
606   $aEcological risk assessment$zChesapeake Bay Watershed
606   $aWater quality biological assessment$zChesapeake Bay Watershed
615  0$aZinc$xToxicology
615  0$aFreshwater organisms$xEffect of metals on
615  0$aMetals$xToxicology
615  0$aEcological risk assessment
615  0$aWater quality biological assessment
700   $aHall$b Lenwood W.$01399543
702   $aScott$b Mark C.$f1964-
702   $aKillen$b William D.
712 02$aChesapeake Bay Program (U.S.),
801  0$bGPO
801  1$bGPO
906   $aBOOK
912   $a9910716052303321
996   $aA probabilistic ecological risk assessment of zinc in surface waters of the Chesapeake Bay watershed$93464885
997   $aUNINA