(NaRMATURNYE RABOTY (B/s - (NtOROPOW(B, (NaLEKSANDR sERGEEWI^s ((NmOSKWA(B.s (NtRUDREZERWIZDAT(B,s, 1956)
(NbIBLIOGR(B.: (NS(B. 245-246 (25 (NNAZW(B.)s
Keywords: (NaRMATURNYE RABOTYs