(NiSSLEDOWANIQ(B. (NmATERIALY(B. (NpISXMA (B:s (NW (B2-(NH T(B..s (Nt(B. 1, /s - (NrIMSKIJ(B-(NkORSAKOWs ((NmOSKWA (B:s (NiZD(B-(NWO an sssr(B,s, 1953)