000 00342nam a22001457a 4500
020 _a9789355405258
082 _a005.43 SIN
100 _aSingh Charanjeet
245 _aOperating System Concepts
250 _aNEP
260 _aNew Delhi
_bKalyani
_c2023
300 _a9.24
650 _aComputer programming, programs & data
942 _cBK
999 _c6725
_d6725