000 00321nam a2200121Ia 4500
008 220201s1998 xx 000 0 eng d
082 _a621.38195
_bCRO
100 _aCrowley, Charles
245 0 _aOperating system: design operated approach
260 _aNew Delhi
_bTata mcGraw Hill
_c1998
300 _a844
942 _2ddc
999 _c27527
_d27527