000 00390nam a2200157Ia 4500
008 221231s9999 xx 000 0 und d
020 _a978-81-7758-774-6
100 _aStallings, William
_95723
245 0 _aCryptography and Network Security
250 _a4th Ed
260 _bTata McGraw-Hill
260 _c2008
300 _a680
650 _aTelecommunication
_95724
942 _cBE_BK
999 _c4167
_d4167