000 00342nam a2200109Ia 4500
008 211214s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
100 _aLefschetz, S.
245 0 _aContribution to the Theory of Nonlinear Oseillations vol 3
260 _bPrinceton University Press
_aPrinceton
_c1956
942 _c1
999 _c55463
_d55463