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100   $a20030113d1999      ua             0
101 0 $aeng
135   $aurmn||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$a1999 Update of ambient water quality criteria for ammonia$b[electronic resource]
210  1$aWashington, D.C. :$cU.S. Environmental Protection Agency, Office of Water,$d[1999]
300   $aTitle from title screen (viewed June 23, 2004).
300   $a"December 1999."
300   $aWritten by Charles Delos, Russ Erickson.
300   $a"Supercedes 1998 Update."
300   $a"EPA 822-R-99-014."
320   $aIncludes bibliographical references.
517 3 $aUpdate of ambient water quality criteria for ammonia
606   $aWater quality$zUnited States
606   $aAmmonia$xEnvironmental aspects$zUnited States
615  0$aWater quality
615  0$aAmmonia$xEnvironmental aspects
700   $aDelos$b Charles G$01385099
701   $aErickson$b Russ$01385100
712 02$aUnited States.$bEnvironmental Protection Agency.$bOffice of Water.
801  0$bAGL
801  1$bAGL
801  2$bOCLCQ
801  2$bGPO
906   $aBOOK
912   $a9910691850803321
996   $a1999 Update of ambient water quality criteria for ammonia$93432215
997   $aUNINA