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Sewage disposal (Jfgywsx)

Environment (J)
     Related Term (Associative): ; Areas and regions (V)
    Environmental quality (Jf)
        Pollution (Jfg)
            Pollution control (Jfgy)
                 Related Term (Associative): Emission control systems (Qpw)
                Water quality management (Jfgyw)
                     Use For: Water pollution control
                    Sewerage (Jfgyws)
                         Related Term (Associative): Sanitary engineering (Ttkfp)
                        Sewage collection (Jfgywsc)
                        Sewage treatment (Jfgywsm)
                             Use For: Waste water treatment; Wastewater treatment
                        Sewage disposal (Jfgywsx)
                             Related Term (Associative): Waste disposal (Jfkyd)