000 00266nam a2200109Ia 4500
008 230401s9999 xx 000 0 eng d
100 _aTANENBAUM(ANDREW S)
245 0 _aMODERN OPEATING SYSTEM
250 _a2
260 _bPEARSON EDUCATION INDIA
942 _2ddc
_cBTECH
999 _c5087
_d5087