Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Unit of light-en#Sense
Ljussignal-sv#Sense
Seinmechanisme met optiek-nl#Sense
Μονάδα φωτισμού-el#Sense
Unidade luminosa-pt#Sense
Lanterne-da#Sense
Lygte-da#Sense
Lysenhed-da#Sense
Unidad luminosa-es#Sense
Φωτιστική μονάδα-el#Sense
Unidad lumínica-es#Sense
Unità luminosa-it#Sense
Lichteinheit-de#Sense
Lichtsignallaterne-de#Sense
Unité lumineuse-fr#Sense
Light unit-en#Sense
Lichteenheid-nl#Sense