00268nam a2200109 a 450000500170000008200170001710000210003424500380005526000310009330000220012463000120014620251202164309.0  a621.833bDUD  aDudley, Darle W.  aHandbook of practical gear design  aNew YorkbMcgrawhillc1984  a65 p.c24 cm.bHB  aGearing