000 00284nam a2200133Ia 4500
100 _aLeeson/ M.
942 _cBK
654 _aComputer
245 _aComputer operation
260 _bScience research assoc.
_aChicago
_c1982
082 _a658.05
300 _a608
546 _aENGLISH
999 _c18917
_d18917