00410nam a22001217a 4500008004100000040005500041080002100096245006700117260006500184300001100249650001300260653001500273230609b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  a621-5(082.2)bL5  aFourth world congress on the theory of machines and mechanisms  aLondon: bMechanical Engineering Publication Limited, c1975  a1260p.  aMachines  aMechanisms