000 00331nam a2200133Ia 4500
008 190723s9999 xx 000 0 und d
020 _a978-93-325-8522-5
100 _aWilliam Stallings
245 0 _aCryptography and Network Security
250 _a7nth
260 _aUttar Pradesh
_bPearson
_c2017
300 _a766:p
942 _cBK
999 _c1985
_d1985