BS EN ISO 389-4:1999 :
BS EN ISO 389-4:1999 : 1377268
BS EN ISO 389-4:1999 :
Title: Acoustics. Reference zero for the calibration of audiometric equipment Reference levels for narrow-band masking noise
Pages: 16
Year:
Publisher: British Standards Institution
Availability: Within 1-2 working days BSI will directly send the standards to End-User after our confirmation.
Title: Acoustics. Reference zero for the calibration of audiometric equipment Reference levels for narrow-band masking noise
Pages: 16
Year:
Publisher: British Standards Institution
Availability: Within 1-2 working days BSI will directly send the standards to End-User after our confirmation.
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