000 00351nam a2200145Ia 4500
008 131111s9999 xx 000 0 und d
100 _aBanzal,Shashi
245 _aData and computer network communication
260 _aNew Delhi
260 _bFirewall
260 _c2007
300 _a766p.
650 _aNetworking:Communication
763 _a32616
999 _c36001
_d36001