Norm
[AKTUELL]
UNE-EN ISO 11654
UNE-EN ISO 11654
ACOUSTICS. SOUND ABSORBERS FOR USE IN BUILDINGS. RATING OF SOUND ABSORPTION. (ISO 11654:1997).
Titel (englisch)
ACOUSTICS. SOUND ABSORBERS FOR USE IN BUILDINGS. RATING OF SOUND ABSORPTION. (ISO 11654:1997).