Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6831
Is Reference of Brunnenfilter-de#Sense
Brøndfilter-da#Sense
Well screen-en#Sense
Φίλτρο πηγαδιού-el#Sense
Strainer-en#Sense
Filter-nl#Sense
Crépine-fr#Sense
Filtro-es#Sense
Filtro da pozzo-it#Sense