Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6831
Is Reference of Uncontrolled overflow spillway-en#Sense
Vrij overstort-nl#Sense
Hochwasserentlastungsanlage ohne Verschluss-de#Sense
Scaricato a soglia libera-it#Sense
Évacuateur de crues à seuil libre-fr#Sense
Højvandsoverløb uden regulering-da#Sense