(NrAZWITIE WZRYWNOGO DELA W sssr ZA (B50 (NLET (B/s - (NmOSKOWSKIJ GORNYJ INSTITUT an sssrs ((NmOSKWA (B:s (Nb(B. (NI(B.,s, 1968)
Keywords: (NwZRYWNOE DELO W sssr (B- (NiSTORIQs