ACUSTICA. CERO NORMAL DE REFERENCIA PARA LA CALIBRACION DE AUDIOMETROS DE TONOS PUROS POR VIA AEREA
ACOUSTICS. STANDARD REFERENCE ZERO FOR THE CALIBRATION OF PURE TONE AIR CONDUCTION AUDIOMETERS.
Buy on AENOR
13.140 / Noise with respect to human beings
CTN 74 - Acoustics
ISO 389/ADD1:1983 (Identical)
ISO 389/ADD2:1986 (Identical)
ISO 389:1985 (Identical)
It is cancelled by: UNE-EN ISO 389:1996
Cancel: UNE 74020:1978
