(NsWOBODNOE WREMQ TRUDQ]IHSQ (B/s - (NpATRU[EW(B, (Nw(B.s ((NkRASNOQRSK (B:s (NkRASNOQR(B. (NKN(B. (NIZD(B-(NWO(B,s, 1961)
Keywords: (N|KONOMIKA TRUDAs