(NrU^XI WESENNIE (B:s (NrOMAN (B/s - (NpERMITIN(B, (NeFIM nIKOLAEWI^s ([(NnOWOSIBIRSK(B] : s [(NkN(B. (NIZD(B-(NWO(B], s, 1961)
Keywords: (NaGRONOMY (B((NH(B. (NL(B.) s; (NcELINNYE ZEMLI (B((NH(B. (NL(B.)s