Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/3606002
Is Reference of Sistema di amplificazione attaccato al soffitto-it#Sense
Geluidsreflector in piramidevorm-nl#Sense
Diffusing cone-en#Sense
Reflekterende pyramide-da#Sense
Pyramide diffusante-fr#Sense
Schallpyramide-de#Sense