| 000 | 00355nam a22000977a 4500 | ||
|---|---|---|---|
| 999 |
_c16270 _d16270 |
||
| 245 | _aIS 10781:1984-Specification for Reference Coupler for the Measurement of Hearing Aids Using Earphones Coupled to The Ear by Means of Ear Inserts | ||
| 260 |
_aNew Delhi : _bBureau of Indian Standards (BIS), _c1984. |
||
| 300 | _a7 p. | ||
| 650 | _aHearing aids | ||
| 942 | _cST | ||