(NuSPEHI rsfsr W RAZWITII PROMY[LENNOSTI S NA^ALA SEMILETKI (B:s ((NcIFRY I FAKTY(B) /s - (NmARTINKOW(B, (NiWAN pETROWI^(B.s ((NmOSKWA (B:s [(NB(B. (NI(B.],s, 1961)
Keywords: (NpROMY[LENNOSTX (B- (Nrsfsrs