000 00329nam a2200133Ia 4500
008 211209s2003 xx 000 0 und d
020 _a0-07-140638-7
041 _aeng
082 _a621.382 O 03 HER
100 _aHERSHEY, JOHN E
245 _aCRYPTOGRAPHY DEMYSTIFIED
260 _aNEW YORK
_bMCGRAW-HILL
_c2003
300 _a356
999 _c42847
_d42847