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  4. Standard "UNE 74020:1991"
WITHDRAWN UNE 74020:1991 9.9.1991 preview

UNE 74020:1991

ACOUSTICS. STANDARD REFERENCE ZERO FOR THE CALIBRATION OF PURE TONE AIR CONDUCTION AUDIOMETERS.

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STANDARD published on 9.9.1991


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69.20 USD

The information about the standard:

Designation standards: UNE 74020:1991
Note: WITHDRAWN
Publication date standards: 9.9.1991
SKU: NS-1134258
The number of pages: 14
Approximate weight : 42 g (0.09 lbs)
Country: Spanish technical standard
Category: Technical standards UNE

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