International symposium-subscriber loops and services, 20-23 May, 1974, Ottawa.
Inst. of Ele.& Electr.Engrs.\
International symposium-subscriber loops and services, 20-23 May, 1974, Ottawa. - n.d. - IEEE, New York, n.d. - p.various pag., 27cm., - .
0
621.39 Ins:666.94
International symposium-subscriber loops and services, 20-23 May, 1974, Ottawa. - n.d. - IEEE, New York, n.d. - p.various pag., 27cm., - .
0
621.39 Ins:666.94