000 00331nam a2200133Ia 4500
005 20260413100817.0
008 230516s9999||||xx |||||||||||||| ||und||
100 _aStallings William
245 0 _aData & computer Communication
260 _bPearson N Delhi
_c2013
300 _a834
942 _cGB
999 _c4701
_d4701