Acoustics — Measurement of sound attenuation of hearing protectors — Subjective method
Acoustique — Mesurage d'affaiblissement acoustique des protecteurs individuels contre le bruit — Méthode subjective
13.340.20 - Head protective equipment. Including helmets, eye-protectors, hearing protectors, ear muffs, teeth protectors and hoods.
Es anulada por: ISO 4869-1:1990
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