01003nam a2200289 i 450099100110864970753620020507111404.0970308s1963 us ||| | eng b10174849-39ule_instLE00642302ExLDip.to Fisicaita53(082.2)53.1.3510.35510.93Lasalle, J.463028Nonlinear differential equations and nonlinear mechanics /J. Lasalle, S. LefschetzNew York :Academic Press,19631 v.Differential equations, nonlinearLefschetz, Solomon.b1017484921-09-0627-06-02991001108649707536LE006 510.34/510.39 LAS12006000021371le006-E0.00-l- 01010.i1021420327-06-02Nonlinear differential equations and nonlinear mechanics189517UNISALENTOle00601-01-97ma -engus 01