00822nam0-22002891i-450-99000008103040332120071012101926.0000008103FED01000008103(Aleph)000008103FED0100000810320020821d1933----km-y0itay50------baengy-------001yy<<The >>world of soundsix lectures delivered at the Royal InstitutionWilliam BraggLondonG. Bell and sons1933196 p.ill.19 cmBell's popular science seriesSuono534Bragg,William Henry<sir ;1862-1942>ITUNINARICAUNIMARCBK99000008103040332113 N 01 1718617FINBCFINBCUNINA