Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Heizhaube-de#Sense
Κάλυπτρο πύρωσης-el#Sense
Cloche chauffante-fr#Sense
Furnace cover ( annealing )-en#Sense
Campana di riscaldo-it#Sense
Gloeistolp-nl#Sense