Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Grado de pureza-es#Sense
Reinheitsgrad-de#Sense
Grau de pureza-pt#Sense
Βαθμός αγνότητας-el#Sense
Renhedsgrad-da#Sense
Grád na híonachta-ga#Sense
Stupeň čistoty-sk#Sense
Tisztasági fok-hu#Sense
Grado di purezza-it#Sense
Grynumo laipsnis-lt#Sense
Degré de pureté-fr#Sense
Zuiverheidsgraad-nl#Sense
Degree of purity-en#Sense