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Water quality management (Jfgyw)

Computer viruses ()
Environment (J)
     Related Term (Associative): Computer viruses (); Areas and regions (V)
    Environmental quality (Jf)
        Pollution (Jfg)
            Pollution control (Jfgy)
                 Related Term (Associative): Emission control systems (Qpw)
                Air quality management (Jfgyb)
                     Use For: Air pollution control; Emission control; Smog control; Transportation control measures
                Soil remediation (Jfgys)
                     Use For: Site remediation
                Bioremediation (Jfgyu)
                Water quality management (Jfgyw)
                     Use For: Water pollution control
                    Oil spill cleanup (Jfgywp)
                         Use For: Oil spill removal
                    Sewerage (Jfgyws)
                         Related Term (Associative): Sanitary engineering (Ttkfp)