000 00325nam a2200121Ia 4500
008 190107s9999 xx 000 0 und d
020 _a9789332585225
100 _a"Stallings, william"
245 0 _aCryptography & network security : principles & practice 7th edition
260 _bPearson IN
365 _b709/-
942 _cBK
999 _c1517
_d1517