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Active standard | Published: 01/01/2010
STN EN ISO 389-9
Acoustics - Reference zero for the calibration of audiometric equipment - Part 9: Preferred test conditions for the determination of reference hearing threshold levels (ISO 389-9:2009)
Available languages: English
Available design: Print design
Detail information
Designation: STN EN ISO 389-9
Publication date: 01/01/2010
Pages: 12
Country: Slovak technical standard
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