Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Landkanal-da#Sense
Ringkanal-da#Sense
Canal de ceinture-fr#Sense
Περιμετρική διώρυγα-el#Sense
Ringkanal-de#Sense
Ring-kanal-da#Sense
Belt canal-en#Sense
Canale circondario-it#Sense
Ringvaart-nl#Sense
Canale perimetrale-it#Sense