000 00238nam a2200109 4500
999 _c9479
_d9479
082 _a001.642 ASH
100 _aAshi, Mahmood Anwar
245 _aDOS 5.0
260 _aLahore:
_bHamdard,
_c1994.
650 _aDOS operating system
942 _cBK