TY  - BOOK
AU  - Digiovanni, Jeffrey J
TI  - Hearing aid handbook, 2011
SN  - 9781435481114
SN  - 200993902
U1  - 617.89 DIG 
PY  - 2011///
CY  - Clifton Park, NY
PB  - Delmar, Cengage Learning
KW  - Hearing aids
N1  - Includes bibliographical references and Index
ER  -