Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/3226004
Is Reference of CCITT-Blaubuch-de#Sense
CCITT (Livre bleu)-fr#Sense
CCITT Blue Book-en#Sense
Γαλάζιο βιβλίο της CCITT-el#Sense