TY  - BOOK
AU  - Backus,John
TI  - The acoustical foundations of music / 
U1  - 781.2 BAC 22nd ed. 
PY  - 1969///.
CY  - London : 
PB  - John Murray, 
KW  - Music
KW  - Music--Acoustics and physics
N1  - Includes bibliographical references and index
ER  -