Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6806003
Is Reference of Cuivre silex-fr#Sense
Koperkiezel-nl#Sense
Rame silice-it#Sense
Kiselkupfer-de#Sense
Copper silicate-en#Sense
Cobre-sílex-pt#Sense