00544nam a2200133Ia 4500008004100000082001900041100002000060245015600080260003700236300002000273490004800293490003600341700003300377260320b        |||||||| |||| 00| 0 eng d  a530.1bL579.GC  aLeon, Manuel De  aGeneralized classical mechanics and field theory; a geometrical approach of Lagrangian and Hemiltonian formalisms involving higher order derivativesb/  aAmsterdam:bNorth-Holland,c1985  axv, 289p. Index  aNorth-Holland Mathematics studies v v. 112  aNotas de Mathematica v no. 102  aRodrigues, Paulo R.eauthor.