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