Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/68
Is Reference of Carneau-fr#Sense
Kesselheizungsschacht-de#Sense
Boiler flue-en#Sense
Ketelhuisschoorsteen-nl#Sense
Trækkanal til kedel-da#Sense
Caldaia a focolare interno-it#Sense