TY  - BOOK
AU  - Zelnick,Ernest ed
AU  - Berger, Kenneth
AU  - Duffy ,John K
AU  - MacAllister, M. Duncan
AU  - McCandless, Geary
AU  - Preves, David A.
TI  - Hearing instrument: selection and evaluation
PY  - 1987///
CY  - Livonia, MI,
PB  - National Institute for Hearing Instrument Studies.
KW  - Hearing aids
KW  - Amplification
KW  - Audiometry
ER  -