00287nam a2200121Ia 4500008004100000041000800041082002400049100001600073245004900089250001000138260000900148300000800157211209s1972    xx            000 0 und d  aeng  a621.992 N72 JON/TOW  aJONES E J H  aPRODUCTION ENGINEERING: JIG AND TOOL DESIGN   a8 ed.  c1972  a289