003060000a22001210004500060000800000082001600008100002000024245002600044260004400070260000900114300000800123650005300131  a100  a621.833 DUD  aDudley, Darle W  aPractical gear design  aNewyork, Mc Graw- Hill Book Company Inc  c1954  a333  aGear design/ machine engineering/ gear materials