Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6826
Is Reference of Quartzalterung-de#Sense
Invecchiamento dei cristalli-it#Sense
Ageing-en#Sense
Aging-en#Sense
Envelhecimento do cristal-pt#Sense
Vieillissement des quartz-fr#Sense
Envejecimiento del cristal-es#Sense
Crystal ageing-en#Sense
Crystal aging-en#Sense
Veroudering van een kristal-nl#Sense
Γήρανση κρυστάλλου-el#Sense