Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Air tube-en#Sense
Δίκτυο κυκλοφορίας αέρος-el#Sense
Air duct-en#Sense
Circuit d'air-fr#Sense
Circuito d'aria-it#Sense
Luchtleiding-nl#Sense
Luftumlauf-de#Sense
Circuito de aire-es#Sense
Air circuit-en#Sense
Κύκλωμα αέρος-el#Sense
Circuito de ar-pt#Sense
Luftrørsystem-da#Sense