Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Zirkoniumdioxid-de#Sense
Diossido di zirconio-it#Sense
Zirconium dioxide-en#Sense
Zirkoniumdioxyde-nl#Sense
Zirconiumdioxid-da#Sense
Dioxyde de zirconium-fr#Sense