(NoSNOWY IZU^ENIQ PRESNOWODNYH \KOSISTEM (B/s - (NwINBERG(B, (NgEORGIJ gEORGIEWI^s ((NlENINGRAD (B:s (NiZD(B-(NWO ZOOLOGI^ESKOGO IN(B-(NTA an sssr(B,s, 1981)
Keywords: (N|KOLOGI^ESKIE SISTEMY WODNYEs