000 003560000a22001330004500
245 _aMultiple nonlinear lumped systems
100 _aSkowronski, J.M.
260 _aWarsaw
_bPolish Scientific Publishers
_c1969
300 _a332 p.
440 _aPolish Academy of Sciences Applied Mechanics series
080 _a621-50
_bS6
041 _aEN
942 _cBK
999 _c94050
_d94050