Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6811001
Is Reference of Nero di silice-it#Sense
Μαύρο του διοξειδίου του πυρίτιου-el#Sense
Negro de sílice-es#Sense
Kieselerdeschwarz-de#Sense
Noir de silice-fr#Sense
Silica black-en#Sense
Mengsel van silica en koolstof verkregen door gloeien van steenkool en kiezelgoer-nl#Sense
Siliciumsort-da#Sense
Negro de sílica-pt#Sense