000 00531 a2200253 4500
001 135566
020 _a0
041 _aeng
080 _a621.39 Ins:666.94
245 _aInternational symposium-subscriber loops and services, 20-23 May, 1974, Ottawa.
250 _an.d.
260 _a
260 _bIEEE, New York, n.d.
260 _c
300 _ap.various pag., 27cm.,
300 _c
490 _a
100 _aInst. of Ele.& Electr.Engrs.\
700 _a
650 _a
650 _a
942 _cBK
942 _2UDC
999 _c135470
_d135470