Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Phase path-en#Sense
Optical path-en#Sense
Mogħdija ottika-mt#Sense
Rayon-fr#Sense
Trajet de phase-fr#Sense
Ray path-en#Sense
Conair optúil-ga#Sense