000 00468nam a2200169Ia 4500
008 131223s9999 xx 000 0 und d
040 _aISI KOLKATA
041 _aEnglish
082 _a515.355
_bL495(5)
245 _aContributions to the theory of nonlinear oscillations
260 _aPrinceton
_bUniv Press
_c1960
300 _aV 5
440 _aAnnals of mathematics studies; 45
650 _aNonlinear oscillations
700 _aLefschetz S
_4ed.
942 _cBK
999 _c49422
_d49422