Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/3606002
Is Reference of Macchia focale reale-it#Sense
Foyer électronique-fr#Sense
Actual focal spot-en#Sense
Foyer thermique-fr#Sense
Elektronischer Brennfleck-de#Sense
Mancha focal real-es#Sense