(NrAZWEDO^NYE RABOTY NA NEFTX W sssr (B:s (NmATERIALY(B.s ((NmOSKWA (B;s (NlENINGRAD (B:s (NgEOL(B. (NIZD(B-(NWO(B,s, 1930)
Keywords: (NnEFTX (B- (NrAZWEDO^NYE RABOTY (B- (Nsssrs