Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/3226004
Is Reference of Universal International Freephone Service-en#Sense
UIFS-en#Sense
Servizio mondiale di chiamata gratuita internazionale-it#Sense
UIFS-fr#Sense
UIFS-de#Sense
Service universel d'appel gratuit international-fr#Sense
UIFS-it#Sense
Welweiter gebührenfreier Dienst-de#Sense