Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/3226004
Is Reference of Utilisation des fréquences-fr#Sense
Use of frequencies-en#Sense
Sfruttamento delle frequenze-it#Sense
Frequenznutzung-de#Sense
Utilización de las frecuencias-es#Sense