(NgOSUDARSTWENNYJ B@DVET sssr (B:s (Nu^EBNOE POSOBIE (B/s - (NrOWINSKIJ(B, (Nn(B. (Nn(B.s ((NmOSKWA (B:s (NgOSFINIZDAT(B,s)
(N~(B. 2 (1950, 346 (NS(B.)s
Keywords: (Nb@DVET sssr (B- (NsTATISTIKAs