Ergonomics - Accessible design - Sound pressure levels of spoken announcements for products and public address systems (ISO 24504:2014); German version EN ISO 24504:2016— 32 стр.
Ergonomics - Accessible design - Sound pressure levels of spoken announcements for products and public address systems (ISO 24504:2014); German and English version FprEN ISO 24504:2015— 32 стр.