Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/2446
Is Reference of Progressionsstufe-de#Sense
Tasso di progressività-it#Sense
Progressive scale-en#Sense
Taux de progressivité-fr#Sense
Escala de progresividad-es#Sense
Progressief tarief-nl#Sense