000 00306nam a2200121Ia 4500
008 190802s9999 xx 000 0 und d
020 _a978-93-528-6915-2
100 _aDouglas E.Comer
245 0 _aComputer Networks and Internets
260 _aNew Delhi
_bPearson
_c2019
300 _a667:p
942 _cBK
999 _c2572
_d2572