000			00518nam a2200181Ia 4500
999			_c9460 _d9460
005			20220616133004.0
008			180712s9999 xx 000 0 und d
020			_a041215630X
082			_a5.432 _bBAR _223
100			_aBARRON, David
245			_aComputer operating systems: for micros, minis and mainframes _c[by] David Barron
250			_a2nd ed.
260			_aLondon _bChapman and Hall _c1984
300			_aviii, 140 p.
500			_aIncludes references and index.
650			_aOperating systems
942			_cR