Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Datum line-en#Sense
Ligne de repère-fr#Sense
Leader-en#Sense
Perusviiva-fi#Sense
Línea de comparación-es#Sense
Bezugslinie-de#Sense
Führungslinie-de#Sense