(NmEHANIKA (B/s - (NpETROWSKIJ(B, (NiWAN iWANOWI^s ((NmINSK (B:s (NiZD(B-(NWO bELORUSSKOGO GOS(B. (NUN(B-(NTA(B,s, 1973)
Keywords: (NmEHANIKAs