000			00381nam a2200145Ia 4500
008			230711s9999||||xx |||||||||||||| ||und||
041			_aENG
082			_a4 _bNO-P
100			_aNorton,Peter
245		0	_aPeter norton dos guide peter revised and expanded
250			_a1st
260			_c1990 _aNew Delhi _bPHI Learning Private Limited
650			_aComputer Engineering
942			_cBK
999			_c188 _d188