000 00583nam a2200241Ia 4500
003 OSt
005 20220912152035.0
006 a|||||r|||| 00| 0
007 ta
008 220909b |||||||| |||| 00| 0 eng d
024 _a61193
037 _cTextual
040 _aCSL
_beng
_cCSL
041 _aeng
082 _aB7:5, J01
100 _aLeeschetz S
245 0 _aContribution to the theory of nonlinear oscilliations
260 _c1950
300 _ap.
_ccm.
650 _aMechanics
942 _hB7:5, J01
_cTEXL
_2CC
999 _c79653
_d79653