(NrEZXBA PO DEREWUs (NU^EBNOE POSOBIE DLQ U^A]IHSQ HUDOVESTWENNO(B-(NPROMY[LENNYH U^ILI] I HUDOVESTWENNO(B-(NTEHNI^ESKIH [KOLs - (NlEWIN(B,(Nl(B. (Np(B.s ((Nm(B.s (NkOIZs, 1957)