TY  - BOOK
AU  - Catchpool , Edmund;Satterly , John
TI  - A Text Book Of Sound
U1  - PL126 
PY  - 1929///
CY  - London
PB  - University Tutorial Press
KW  - Physics Light, Heat and Sound
N1  - PL means Physics Light, Heat and Sound Page No. 465-469 in A-Z Accession Register (Accession No. PL1-PL131)
ER  -