Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Sík felület-hu#Sense
Superficie plana-es#Sense
Plane surface-en#Sense
Επίπεδη επιφάνεια-el#Sense
Ebene Flaeche-de#Sense
Flat surface-en#Sense
Tasainen pinta-fi#Sense
Plan yta-sv#Sense
Platvlak-nl#Sense
Superficie piana-it#Sense
Plan overflade-da#Sense
Plokščias paviršius-lt#Sense
Surface plane-fr#Sense