Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Sicherheitshöhe-de#Sense
Altura de seguridad-es#Sense
Ύψος ασφάλειας-el#Sense
Sikkerhedshøjde-da#Sense
Altitude de segurança-pt#Sense
Veilige hoogte-nl#Sense
Altezza di sicurezza-it#Sense
Safety height-en#Sense
Säkerhetshöjd-sv#Sense
Altitude de sécurité-fr#Sense
Turvallinen korkeus-fi#Sense