Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Luftverschmutzung-de#Sense
Contaminación atmosférica-es#Sense
Pollution de l'air-fr#Sense
Ρύπανση του αέρα-el#Sense
Air contamination-en#Sense
Contaminação do ar-pt#Sense
Persluchtverontreiniging-nl#Sense
Luftforurening-da#Sense
Ilman epäpuhtaus-fi#Sense
Luftförorening-sv#Sense