Essentials of sound [by] F. J. H. Dibdin. Dibdin, Frederick John Hubert. Sound. Music Acoustics and physics. QC225 .D5 534 19 DIE London, Melbourne [etc.] Macmillan, 1968. 1968. 1968 Text vii, 168 p. eng Essentials of physics for general certificate 'A' level students