(NoHRANA PRIRODY (B:s (Nu^EBNOE POSOBIE (B/s - (NiOGANZEN(B, (NbODO gERMANOWI^s; (NiGOLKIN(B, (NnIKOLAJ iWANOWI^s ((NtOMSK (B:s (NiZD(B-(NWO tOM(B. (NUN(B-(NTA(B,s, 1976)
Keywords: (NoHRANA PRIRODYs