(NrUBEV (B:s (NrOMAN (B/s - (NbALKOW(B, (NkIM nIKOLAEWI^s ((NuLAN(B-(NuD\ (B:s (NbURQT(B. (NKN(B. (NIZD(B-(NWO(B,s, 1977)
Keywords: (N~ELOWEK I PRIRODA (B((NH(B. (NL(B.)s