Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Gate valve structure-en#Sense
Chambre des vannes-fr#Sense
Schieberbauwerk-de#Sense
Vasca di deposito-it#Sense
Afsluiterruimte-nl#Sense
Ventilrum-da#Sense