https://pictures.abebooks.com/isbn/9783642223556-us.jpg Room Acoustical Fields@By: Fridolin Mechel@Publisher: @Springer@Print ISBN: 9783642223556, 3642223559@eText ISBN: 9783642223563, 3642223567@Copyright year: 2013@Format: EPUB@Available from $ 209.00 USD@SKU: 9783642223563 Download now: https://ouo.io/j0I3ja