000 00303nam a2200121Ia 4500
008 250224s9999 xx 000 0 und d
020 _a816020302
082 _aREF384.03GRA
100 _aGraham John
245 0 _aDictionary Of Telecommunications
260 _bPenguin Books Ltd.
_c1936
942 _cRBK
999 _c443195
_d443195