Hearing aids of the type intended to be fitted in the external auditory meatus of the user.
| Autor: | Giannetti, Vittorio |
|---|---|
| Zdroj: | Journal of the Acoustical Society of America; 1986, Vol. 80 Issue 4, p1282-1282, 1p |
| Databáze: | Complementary Index |
| Externí odkaz: |
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