Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Noodschuiven-nl#Sense
Θυροφράγματα ασφαλείας-el#Sense
Relief sluices or auxiliary valves-en#Sense
Hjælpestigbord-da#Sense
Paratoie ausiliarie-it#Sense
Notschuetze-de#Sense
Compuertas de reserva-es#Sense
Vannes de secours-fr#Sense