(NwWEDENIE W TEORI@ KOLEBANIJ (B:s (Nu^EBNOE POSOBIE (B/s - (NsTRELKOW(B, (NsERGEJ pAWLOWI^s ((NlENINGRAD (B;s (NmOSKWA (B:s (NgOSTEHIZDAT (B,s, 1950)
Keywords: (NkOLEBANIQs