IATE-326712

Instance of: http://www.w3.org/2004/02/skos/core#Concept

Subject Field	unknown
Is Reference of	Filter layer-en#Sense
	Capa filtrante-es#Sense
	Strato filtrante-it#Sense
	Filterschicht-de#Sense
	Couche filtrante-fr#Sense
	Couche drainante-fr#Sense
	Dränschicht-de#Sense
	Capa de drenaje-es#Sense