000 00274nam a2200109Ia 4500
008 230401s9999 xx 000 0 eng d
100 _aComer(douglas E)
245 0 _aComputer networks and internets
250 _a4th
260 _bPEARSON EDUCATION INDIA
942 _2ddc
_cMCA
999 _c12694
_d12694