Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Vlamboogoven-nl#Sense
Forno ad arco-it#Sense
Lichtbogenofen (1)-de#Sense
Arc-furnace-en#Sense
Elektroofen (2)-de#Sense
Four à arc-fr#Sense