| 000 | 00264nam a2200085 4500 | ||
|---|---|---|---|
| 080 |
_a _b |
||
| 245 | _aISO: 1999:1990 Acoustics-Determinatin of Occupational Noise exposure and estimation of noise-induced hearing impairment | ||
| 100 | _aI.S.O. | ||
| 250 | _a2 | ||
| 260 |
_aSwitzerland _bI.S.O. _c1990 |
||
| 300 | _a17 | ||
| 999 |
_c37748 _d37748 |
||