000 00250nam a2200121Ia 4500
008 200701s2009 xx 000 0 eng d
100 _aDHAMDHERE
245 0 _aOPERATING SYSTEMS
250 _a2nd
260 _bTMH
300 _a789
942 _2ddc
_cGE
999 _c4043
_d4043