000 00296nam a2200121Ia 4500
008 221118b |||||||| |||| 00| 0 eng d
040 _cBGL
100 _aStalings, William
245 0 _aNetwork security essentials
260 _aN D
_bPearson Education Asia
_c2003
300 _a366p
942 _cBB
999 _c39493
_d39493