Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Επιπεδότητα-el#Sense
Planéité-fr#Sense
Planarità-it#Sense
Tasomaisuus-fi#Sense
Planhet-sv#Sense
Planidad-es#Sense
Planeidade-pt#Sense
Vlakheid-nl#Sense
Ebenheit-de#Sense
Planhed-da#Sense
Flatness-en#Sense