TY  - BOOK
AU  - Keen,Martin L.
TI  - The how and why wonder book of sound
T2  - How and why wonder books
PY  - 1969///
CY  - New York
PB  - Grosset & Dunlap
KW  - Sound
UR  - http://www.archive.org/details/howwhywonderbook03keen
UR  - http://www.openlibrary.org/books/OL24256196M
ER  -