000			00350nam a2200169Ia 4500
008			240220s9999 xx 000 0 und d
041			_aENG
100			_aMilan M.
245		0	_aOperating systems
260			_aNULL
260			_bTata Mcgraw Hill.
260			_c1987
300			_a755p.
365			_b235
650			_aCOMPUTER
942			_cDBK
999			_c26054 _d26054