. . . . . "Author, composer, and builder Cris Forster illuminates the mathematical principles of acoustic music, offering practical information and new discoveries about both traditional and innovative instruments. --from publisher description." . . . . . . "Musical Mathematics : on the art and science of acoustic instruments" . . . . . "Musical mathematics : on the art and science of acoustic instruments" . . . . . "Akustik Musikinstrument." . . "Physik Musikinstrument." . . "Musikinstrument Akustik." . . "Musikinstrumentenbau." . . . . "Musikinstrument." . . "Akustik." . . "Musikinstrument Physik." . .