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Ergonomic assessment of speech communication. Speech interference level and communication distances for persons with normal hearing capacity in direct communication (SIL method).
STANDARD published on 15.3.1997
Designation standards: BS ISO 9921-1:1996
Note: WITHDRAWN
Publication date standards: 15.3.1997
SKU: NS-115623
The number of pages: 18
Approximate weight : 54 g (0.12 lbs)
Country: British technical standard
Category: Technical standards BS
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