TY  - BOOK
AU  - Gayford,M.L.
TI  - Electroacoustics: microphones, earphones and loudspeaker 
SN  - 0408000260
PY  - 1970///
CY  - London
PB  - Newnes-Butterworths
KW  - Electro-acoustics
KW  - Microphone
KW  - Loudspeakers
ER  -