Acoustics - hearing protectors: part 1 : subjective method for the measurement of sound attenuation (ISO 4869- 1 : 1990, IDT).
Acoustics - hearing protectors: part 1 : subjective method for the measurement of sound attenuation (ISO 4869- 1 : 1990, IDT).
- Putrajaya Department of Standards Malaysia 2004.
- iii, 7p. ill. 30cm
- MS ISO 4869- 1 : 2004 .
Standardization--Malaysia
MS ISO 4869- 1 2004
Standardization--Malaysia
MS ISO 4869- 1 2004