Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Cinza volante-pt#Sense
Flygaska-sv#Sense
Flyveaske-da#Sense
Cenere volatile-it#Sense
Lentotuhka-fi#Sense
Cenere volante-it#Sense
Vliegas-nl#Sense
Cendre volante-fr#Sense
Ceniza volante-es#Sense
Fly ash-en#Sense
Flugasche-de#Sense
Ιπτάμενη τέφρα-el#Sense