00803nam0-22002891i-450-99000397584040332120060626131122.00-19-856341-8000397584FED01000397584(Aleph)000397584FED0100039758420031028d1990----km-y0itay50------baengActvated SludgeTheory and PracticeN.F. GrayOxfordOxford Science Publications1990IX,272 p.25 cmBibl. Ing. SanitariaTRATTAMENTO ACQUE RIFIUTOGray,N.F.149852ITUNINARICAUNIMARCBK99000397584040332115 N/4-9inv.n. 544DINIDDINIDActvated Sludge473108UNINA