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ACOUSTICS. REFERENCE ZERO FOR THE CALIBRATION OF AUDIOMETRIC EQUIPMENT. PART 2: REFERENCE EQUIVALENT THRESHOLD SOUND PRESSURE LEVELS FOR PURE TONES AND INSERT EARPHONES. (ISO 389-2:1994).
STANDARD published on 4.2.1997
Designation standards: UNE-EN ISO 389-2:1997
Publication date standards: 4.2.1997
The number of pages: 16
Approximate weight : 48 g (0.11 lbs)
Country: Spanish technical standard
Category: Technical standards UNE
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