Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6811
Is Reference of Porphyr-de#Sense
Porphyry-en#Sense
Porfido-it#Sense
Πορφυρίτης-el#Sense
Pórfiro-pt#Sense
Porfier-nl#Sense
Porphyre-fr#Sense
Pórfido-es#Sense
Porfyr-da#Sense