000 00293nam a2200121Ia 4500
008 160122s9999 xx 000 0 und d
041 _aEnglish
100 _aMukesh Singhal
245 _aAdvanced concept in operating system
260 _bDelhi:TMH
_c2002
300 _a522p.
650 _aComputer
999 _c4516
_d4516