000 00260nam a2200109Ia 4500
008 230401s9999 xx 000 0 eng d
100 _aSTALLINGS(WILLIAM)
245 0 _aOperating system
250 _aVI
260 _bPEARSON EDUCATION INDIA
942 _2ddc
_cMCA
999 _c12906
_d12906