Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Kehrschleife-de#Sense
Ελικοειδής ορεινός δρόμος-el#Sense
Tracciato elicoidale-it#Sense
Boucle hélicoïdale-fr#Sense
Lus van spiraalvormig stijgende spoorlijn-nl#Sense
Spiral mountain route-en#Sense
Spiralformet vendesløjfe-da#Sense
Lazo de cerrado-es#Sense
Jernbane der løber i spiral-da#Sense