000 00335nam a2200145Ia 4500
008 230913s9999 xx 000 0 und d
082 _a5.43 GIL
100 _aGill, P.S.
245 0 _aOperating Systems Concepts
260 _aNEW DELHI
260 _bFIREWALL
260 _c2008
300 _a181
650 _aComputers Engineering
999 _c150424
_d150424