00761nam0-22002891i-450-99000088365040332120001010000088365FED01000088365(Aleph)000088365FED0100008836520001010d--------km-y0itay50------baitay-------001yyOscillations in Nonlinear SystemsNew YorkMcGraw-Hill1963.p.180ill.cm 23Dinamica , SismicaHale,Jack K.8611ITUNINARICAUNIMARCBK99000088365040332103 D.0,151417IINTCIINTCOscillations in nonlinear systems82379UNINAING01