Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Piedras refractarias-es#Sense
Pedras refratárias-pt#Sense
Pietre refrattarie-it#Sense
Støbegrat-da#Sense
Vuurvaste stenen-nl#Sense
Fire burrs-en#Sense
Pierres réfractaires-fr#Sense
Eldfasta stenar-sv#Sense
Steine [feuerfest]-de#Sense