TY  - BOOK
AU  - Corliss,Edith L.R.
TI  - Selection of hearing aids
AV  - RF300 .C66 1951
PY  - 1951///
CY  - Washington, D. C.
PB  - United States Department of Commerce, National Bureau of Standards
KW  - Aparatos para la sordera
N1  - O198
ER  -