000 00329nam a2200133Ia 4500
005 20260413100750.0
008 230516s9999||||xx |||||||||||||| ||und||
100 _astallings William
245 0 _aOperating system
260 _bPearson N Delhi
_c2011
300 _a822
942 _cGB
999 _c4449
_d4449