000 00293nam a22001217a 4500
020 _a9789332518773
100 _aWilliam Stallings
245 _aCryptography and Network Security:Principles and Practice
250 _a6th
260 _aNew Delhi
_bPearson
_c2014
300 _a660
942 _cBB
999 _c56646
_d56646