000 00282nam a2200121Ia 4500
008 190516s9999 xx 000 0 und d
100 _aSTALLINGS(WILLIAM)
245 0 _aCRYPTOGRAPHY AND NETWORK SECURITY
250 _a7TH
260 _c2018
_bPEARSON
300 _a766
942 _cBK
999 _c17654
_d17654