000			00327nam a2200133Ia 4500
008			241226s9999 xx 000 0 und d
020			_a0
082			_a5.13 _bNOR
100			_aNorton Peter
245		0	_aIntroduction to computers
260			_aNew Delhi : _bTata Macgrow Hill, _c2021.
350			_a315
650			_aManagement
999			_c171100 _d171100