00910nam0-2200313---450-99000935840040332120110511171041.00-521-29525-4000935840FED01000935840(Aleph)000935840FED0100093584020110511d1980----km-y0itay50------baengGBa-------001yyEcological effects of waste waterE.B. Welchwith hydrographic characteristics by T. LindellCambridgeCambridge University Pressc1980XII, 337 p.ill.23 cmIdrobiologiaWelch,Eugene B.511020Lindell,TommyITUNINARICAUNIMARCBK990009358400403321VI C 4367803DMVSFDMVSFEcological effects of waste water768372UNINA