Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6821
Is Reference of Styreanordning-da#Sense
Regelaandrijving-nl#Sense
Regelantrieb-de#Sense
Variable speed drive-en#Sense
Regolazione elettrica-it#Sense
Régulation électrique-fr#Sense