00668nam0-22002531i-450-990001298190403321000129819FED01000129819(Aleph)000129819FED0100012981920000920d1963----km-y0itay50------baengOscillations in nonlinear systemsby HALE J.K.S-New YorkMcGraw-Hill1963Hale,Jack K.8611ITUNINARICAUNIMARCBK99000129819040332132-H-185014MA1MA1Oscillations in nonlinear systems82379UNINAING01