000 00306nam a2200133Ia 4500
008 220201s9999 xx 000 0 eng d
082 _a5.43
_bBHA
100 _aBhatt, P.C.P.
245 3 _aAn introduction to operating systems
250 _a2
260 _aNew Delhi
_bPHI
300 _a616
942 _2ddc
999 _c63700
_d63700