000			00446pam a2200157a 44500
082			_a621.902 _bT393e
100			_aThornhill, Robert Blair
245	1		_aENGINEERING GRAPHIC AND NUMERICAL CONTROL
260			_aNew York _bMcgraw-Hill _c1967
300			_a349
440			_aEngineering Graphics Monograph Series _v
500			_aBibliography : P. 338-342
650			_aMachine-Tools -- Numerical Control
964			_gCIRC
997			_aK4104 C
999			_c387243 _d387243