000 003300000a22001450004500
245 _aISDN technology
100 _aBrewster, R.L.
260 _aLondon
_bChapman & Hall
_c1993
300 _ax, 126p., diagrams
020 _a0412431807
080 _a621.39
_bB7
650 _aCOMPUTER NETWORKS
041 _aEN
942 _cBK
999 _c63648
_d63648