Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of F-lag-da#Sense
F-laag-nl#Sense
Réteg-hu#Sense
Στρώμα F-el#Sense
F-kerros-fi#Sense
F-skikt-sv#Sense
F layer-en#Sense
Couche F-fr#Sense
Camada F-pt#Sense
Región F-es#Sense
Strato F-it#Sense
Capa F-es#Sense
F-Schicht-de#Sense