000 00278nam a2200109Ia 4500
008 230302s9999 xx 000 0 und d
082 _a004.678COM
100 _aCOMER (Douglas. E)
245 _aComputer Networks and Internets
260 _aNEW DELHI
_b PEARSON
365 _cRS
999 _c147858
_d147858