00517nam a2200181Ia 4500003000900000008004100009020001800050040001600068080001700084100001800101245008200119260003800201300001000239650003000249650001000279650002700289650001900316IN-BaIIA211028s9999    xx            000 0 eng d  a0-470-59627-9  cIIA Library  a621-233bMER  aMerritt, H. E 0aGear engineeringcH. E. Merritt                                                aNew YorkbJohn Wiley & Sonsc1971  a489p.  aCounter - rotating wheels  aGears  aMechanical engineering  aNASA thesaurus