000 00408nam a2200157Ia 4500
008 210716s1996 xx 000 0 und d
020 _a8120310802
041 _aeng
082 _a004.65 HELG
100 _aHeld, Gilbert.
245 _aUnderstanding data communications.
250 _a4
260 _aNew Delhi
_bPrentice Hall of India PVt Ltd
_c1996
300 _axvii,431
650 _aComputer Networks
999 _c183529
_d183529