(NpRIRODNYE RESURSY I IH ISPOLXZOWANIE (B/s - (NuSOLXCEWA(B, (Nt(B.(Ni(B.s; (NoMSKIJ GOSUDARSTWENNYJ PEDAGOGI^ESKIJ INSTITUT IM(B. (Na(B.(Nm(B. (NgORXKOGOs ((NoMSK (B:s (Nb(B. (NI(B.,s, 1976)
(NwYP(B. 2 (1976, 106 (NS(B.)s
Keywords: (NoHRANA OKRUVA@]EJ SREDY s