000			00470nam a2200169Ia 4500
003			NIELib
008			211019s9999||||xx |||||||||||||| ||und||
020			_a0-412-15630-x
082			_a001.6425 _bBAR
100			_aBarron, David _920116
245			_aComputer operating systems for micros,minis and mainframes
260			_bChapman and Hall, _c1971. _aLondon:
300			_aviii,140p.; _c23cm
650			_aData Processing
650			_aComputer Science
942			_2ddc _cLM
999			_c7351 _d7351