Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Ρουφράκτης ανοικτών αγωγών-el#Sense
Schuif met vrije waterspiegel-nl#Sense
Stemmeværk-da#Sense
Schleuse im offenen Graben-de#Sense
Paratoia a pelo libero-it#Sense
Vanne de surface-fr#Sense
Open channel gate-en#Sense
Comporta de superfície-pt#Sense
Válvula a cielo abierto-es#Sense