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020 _a9788121931649
040 _c0
082 _a004.451
_bCHO
100 _aRajiv Chopra
245 _aOperating systems: A practical approach
_cRajiv Chopra
260 _aNewDelhi:
_bS.Chand;
_c2009
300 _a523p:
_c23cm
650 _aOS
942 _2ddc
_cG