Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6831
Is Reference of Rammfilter-de#Sense
Punta filtrante-it#Sense
Perforación de drenaje-es#Sense
Well point-en#Sense
Sugespids-da#Sense
Pointe filtrante-fr#Sense
Verticale drainagepijp-nl#Sense