000 00289nam a2200121Ia 4500
008 220821s2017 xx 000 0 eng d
100 _aStallings, William
245 0 _aCryptography and Network Security
250 _a7
260 _bPearson
_c2017
300 _a766
942 _2ddc
_cBTECH
_01
999 _c2558
_d2558