000 00348nam a2200145Ia 4500
008 231217s9999 xx 000 0 und d
041 _aEnglish
082 _a001.642 RAV
100 _aRavishankar S
245 0 _aText book of operating system
260 _c2001
_bSubhash Stores
300 _a463
650 _aoperating,system
942 _cAA
999 _c169790
_d169790