Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6826
Is Reference of VSEI-de#Sense
Union Suisse des Installateurs-Electriciens-fr#Sense
USIE-fr#Sense
Verband Schweizerischer Elektro-Installationsfirmen-de#Sense
USIE-it#Sense
Unione svizzera degli installatori elettricisti-it#Sense