000 00323nam a2200133Ia 4500
008 221231s9999 xx 000 0 und d
100 _aStallings, William
_93190
245 0 _aCryptography and Networks Security
260 _bPearson
260 _c1999
300 _apv
650 _aComputer Science
_93191
942 _cBE_BK
999 _c2903
_d2903