000 00320nam a2200133Ia 4500
008 160122s9999 xx 000 0 und d
041 _aEnglish
100 _aWilliam Stallings
245 _aCryptography and Network Security
250 _a4th
260 _bDelhi:Pearson Ed
_c2006
300 _a680p.
650 _aComputer
999 _c1667
_d1667