Acoustics. Standard reference zero for the calibration of pure-tone air conduction audiometers
STANDARD published on 1.5.1993
Designation standards: STN ISO 389
Classification mark: 011630
Catalog number: 50224
Note: WITHDRAWN
Publication date standards: 1.5.1993
Approximate weight : 21 g (0.05 lbs)
Country: Slovak technical standard
Category: Technical standards STN