000			00361nam a2200169Ia 4500
008			240220s9999 xx 000 0 und d
041			_aENG
100			_aMilenkovic M.
245		0	_aOperating systems.
260			_aNULL
260			_bMcgraw Hill Book Co.
260			_c1987
300			_a568p.
365			_b189.6
650			_aCOMPUTER
942			_cDBK
999			_c23591 _d23591