000 00258nam a2200109Ia 4500
008 190516s9999 xx 000 0 und d
100 _aSTALLINGS(WILLIAM)
245 0 _aCRYPTOGRAPHY AND NETWORK SECURITY
260 _c2005
_bPHI
300 _a681
942 _cBK
999 _c17455
_d17455