Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of D.c. restoring-en#Sense
Schwarzwerthaltung-de#Sense
Gelijkstroomherstelling-nl#Sense
Restitution du niveau du noir-fr#Sense
Restitution de la composante continue-fr#Sense
Schwarzsteuerung-de#Sense