00246nam a2200109Ia 4500008004100000041000800041082002000049100001500069245003500084260000900119300000800128211209s1977    xx            000 0 und d  aeng  a621.815 N77 JOS  aJOSEPH E S  aMECHANICAL ENGINEERING DESIGN   c1977  a695