Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Heizwendel-de#Sense
Σπείρα θερμάνσεως-el#Sense
Enroulement chauffant-fr#Sense
Heater coil-en#Sense
Enrolamento de aquecimento-pt#Sense