000 00322nam a2200133Ia 4500
008 220822s9999||||xx |||||||||||||| ||und||
020 _a9788187325116
082 _a005.43
_bWAL/O
100 _aEkta Walia
245 0 _aOperating System Concepts
260 _aNew Delhi
_bKhanna Book
_c2002
300 _a322
942 _cBK
999 _c11571
_d11571