(NwODOSNABVENIE I OHRANA OKRUVA@]EJ SREDY (B/s - (Ng@NTER(B, (Nl(B.(Ni(B.s; (NaKADEMIQ KOMMUNALXNOGO HOZQJSTWA IM(B. (Nk(B.(Nd(B. (NpAMFILOWAs ((NoREL (B:s (NpRIOKSKOE KN(B. (NIZD(B-(NWO(B,s, 1977)
Keywords: (NwODOSNABVENIEs; (No^ISTKA WODs