000 00261nam a2200109Ia 4500
008 190516s9999 xx 000 0 und d
100 _aSTALLINGS(WILLIAM)
245 0 _aCRYTOGRAPHY &NETWORK SECURITY
260 _c2005
_bND PEARSON
300 _a686
942 _cBK
999 _c17059
_d17059