000 00303nam a2200121Ia 4500
008 160710s1987 xx 000 0 und d
082 _a621.382 CAN
100 _aCANTRAINE,G.
245 _aNew system and services in telecommunicaton
260 _bNorth holand
_c1987
300 _a427
942 _2ddc
_cB
999 _c55971
_d55971