Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/3606002
Is Reference of Schiste bitumineux-fr#Sense
Esquisto bituminoso-es#Sense
Xisto betuminoso-pt#Sense
Bituminous shale-en#Sense
Bituminöser Schiefer-de#Sense
Scisto bituminoso-it#Sense