Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Hultværsnit-da#Sense
Kokerprofiel-nl#Sense
Κοίλη διατομή-el#Sense
Konstruktionsrör-sv#Sense
Profil creux-fr#Sense
Hol profiel-nl#Sense
Profilo chiuso-it#Sense
Hollow section-en#Sense
Putkipalkki-fi#Sense
Hohlprofil-de#Sense
Perfil hueco-es#Sense
Διάκενος διατομή-el#Sense