Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of PNL-it#Sense
Επίπεδο του αντιληπτού θορύβου-el#Sense
PNL-en#Sense
Perceived noise level-en#Sense
PNL-el#Sense
Opfattet støjniveau-da#Sense
PNL-da#Sense
Livello di rumore percepito-it#Sense