TY  - BOOK
AU  - Ballou, Glen
TI  - Electroacoustic devices: microphones and loudspeakers 
SN  - 240812670
AV  - TK 5981 .E44 2009 
PY  - 2009///
CY  - [Place of publication not identifed]
PB  - Focal Press
KW  - ELECTROACOUSTIC TRANSDUCERS
ER  -