000 00311nam a2200121Ia 4500
008 190812s9999 xx 000 0 und d
020 _a9789332585225
100 _a"Stallings, william"
245 0 _aCryptography & Network Security: Principles And pratice
260 _bPearson In
365 _b709
942 _cBK
999 _c5744
_d5744