https://pictures.abebooks.com/isbn/9783319785141-us.jpg Nonlinear Vibrations and the Wave Equation@By: Alain Haraux@Publisher: @Springer@Print ISBN: 9783319785141, 3319785141@eText ISBN: 9783319785158, 331978515X@Copyright year: 2018@Format: EPUB@Available from $ 54.99 USD@SKU: 9783319785158 Download now: https://ouo.io/NLzfse