000			00604nam a2200193Ia 4500
919			_a023184
082			_a620.0042 _bN77
100			_aConf. on computer aided design systems
245			_aCAD systems Proc. _b _ced. by John J. Allan.
260			_bNorth-Holland _c1977
700			_aAllan, John J., ed.
999			_c22001 _d22001