Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/3606002
Is Reference of Uraniumhoudend porfiergesteente-nl#Sense
Porfido uranifero-it#Sense
Uranholdig porfyr-da#Sense
Uraniferous porphyry-en#Sense
Porphyre uranifère-fr#Sense
Uranfuehrender Porphyr-de#Sense