000 00317nam a2200133Ia 4500
999 _c19962
_d19962
008 190711s9999 xx 000 0 und d
020 _a0273019805
082 _a621.384 L283
100 _aLangley, Graham
245 0 _aTelecommunications Primer
260 _aLondon
_bPitman
_c1983
300 _a25X18
942 _cBK