00868nam0-22002771i-450-99000397840040332120031110124555.0000397840FED01000397840(Aleph)000397840FED0100039784020031110d1966----km-y0itay50------baengWastewater treatment plant operator training course one (with visual ards)WPCFWashingtonWPCF19661 v. (47 p.)25 cmBibl. INg. SanitariaTRATTAMENTO DELLE ACQUE DI RIFIUTOWater Pollution Control Federation494352ITUNINARICAUNIMARCBK99000397840040332115 N/4-2DINIDDINIDWastewater treatment plant operator training course one (with visual ards473764UNINA