00813nam0-22003131i-450-99000103539040332120080303152227.0000103539FED01000103539(Aleph)000103539FED0100010353920001205d1962----km-y0itay50------baengUSy-------001yyNonlinear oscillationsby Nicholas MinorskyPrinceton [N.J.]Van Nostrand1962Meccanica classica531Minorsky,Nicholas49346ITUNINARICAUNIMARCBK99000103539040332124-0293002FI132-H-154836MA1FI1MA1Nonlinear oscillations45796UNINA