ACOUSTICS. HEARING PROTECTORS. PART 1: SUBJECTIVE METHOD FOR THE MEASUREMENT OF SOUND ATTENUATION.
STANDARD published on 2.12.1991
Designation standards: UNE 74011-1:1991
Note: WITHDRAWN
Publication date standards: 2.12.1991
The number of pages: 10
Approximate weight : 30 g (0.07 lbs)
Country: Spanish technical standard
Category: Technical standards UNE