000 00296nam a2200121Ia 4500
008 211209s1970 xx 000 0 und d
041 _aeng
082 _a621.9023 N70 MAR
100 _aMARTIN, S J
245 _aNUMERICAL CONTROL OF MACHINE TOOLS
260 _aLONDON
_bELBS
_c1970
300 _a302
999 _c23420
_d23420