Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Καθαρισμός αερίου από αέρα-el#Sense
Puesta en aire-es#Sense
Skylning med luft-da#Sense
Substituição do gás por ar-pt#Sense
Messa in aria-it#Sense
Ontgassen-nl#Sense
Ausblasen mit Luft-de#Sense
Mise à l'air-fr#Sense
Udblæse med luft-da#Sense
Purging from gas to air-en#Sense