00289nam a2200097Ia 4500008004100000082001800041100002500059245006600084260002200150650001900172220204s9999    xx            000 0 und d  a621.01bART.3  aArtobolevsky, Ivan I 0aMechanisms in modern engineering design. V 3. Gear mechanisms  aMoscowbMirc1977  aGear mechanism