Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Vindue-da#Sense
Portello di osservazione-it#Sense
Hublot d'observation-fr#Sense
View port-en#Sense
Diagnostiekpoort-nl#Sense
Diagnostikoeffnung-de#Sense
Fenêtre à vue-fr#Sense