000 00322nam a2200133Ia 4500
008 241226s9999 xx 000 0 und d
020 _a0
082 _a4
_bNOR
100 _aNorton Peter
245 0 _aDos guide
260 _aNew Delhi :
_bPrentice Hall India,
_c2021.
350 _a195
650 _aInformation Technology
999 _c163693
_d163693