TY  - BOOK
AU  - Efron,Alexander
TI  - Sound
T2  - Basic science series
AV  - QC225 .E35
U1  - 534 EFR 
PY  - 1957///]
CY  - New York
PB  - J. F. Rider
KW  - Sound
N1  - Introduction to sound // Hearing, speech and music // Wave nature of sound //
ER  -