000			00362nam a2200145Ia 4500
005			20250829161443.0
082			_a629.836 _bBUE
100			_aButeni N V _9107604
245			_aElements of the theory of nonlinear oscillations
260			_aNew York: _bBlaisdell, _c1965.
300			_a226p.
546			_aeng
650			_aSystem engineering _9107605
942			_cBK
999			_c40015 _d40015