000 00306nam a22001457a 4500
020 _a9788131723593
100 _aGray Nutt
245 _aOperating Systems
250 _a3rd
260 _aDelhi
_bPearson
_c2013
300 _axxx+806
700 _aNabendu Chaki
700 _aSamistha Neogy
942 _cBB
999 _c56555
_d56555