000			00318nam a2200133Ia 4500
100			_aPer Brinch Hansen
020			_a0-87692-135-7
654			_aComputer Science
942			_cBK
245			_aOperating system principles
260			_aPrentice-Hall, New Delhi _cc1973
082			_a001.642 Han
300			_axviii,366p
999			_c17711 _d17711