000 00310nam a2200121Ia 4500
008 230524s9999 xx 000 0 und d
100 _aWilliam Stallings
245 0 _aCryptography and Network Security
260 _aNEW DELHI
_bPearson
500 _aQuantity Number: 46
650 _aElectrical
942 _cBK
999 _c35910
_d35910