Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/12
Is Reference of Belgisk norm-da#Sense
Belgian Standard-en#Sense
Nationale Belgische Norm-nl#Sense
Norma NBN-pt#Sense
NBN-nl#Sense
NBN-fr#Sense
Belgische Norm-de#Sense
NBN-de#Sense
Belgische Norm-nl#Sense
Norme belge-fr#Sense