00783nam0-22002651i-450-990001298270403321000129827FED01000129827(Aleph)000129827FED0100012982720000920d1962----km-y0itay50------baengDynamicsSystems, Variational Methods and Relativityby HALFMAN R.L.Reading [MA]Addison-Wesley1962Addison-Wesley Series in the Engineering Sciences Mechanics and ThermodynamicsVOLUME IIHalfman,Robert L.239ITUNINARICAUNIMARCBK99000129827040332121-I-14-(2)11552MA1MA1Dynamics354708UNINAING01