Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/7621001
Is Reference of Group on Non-ferrous Ores and Metals (OECD)-en#Sense
Gruppe "NE-Erze und -Metalle" (OECD)-de#Sense
Gruppen vedrørende Ikkejernholdige Malme og Metaller-da#Sense
Groupe "minerais et métaux non-ferreux"-fr#Sense