Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6826
Is Reference of Merkinantojärjestelmä-fi#Sense
Sistema di segnalazione-it#Sense
Signaling system-en#Sense
Signaleringssysteem-nl#Sense
Sistema de sinalização-pt#Sense
Signaleersysteem-nl#Sense
Signalerings-system-da#Sense
Signaleringsysteem-nl#Sense
Signalling system-en#Sense
Système de signalisation-fr#Sense
Σύστημα σηματοδοσίας-el#Sense
Sistema de señalización-es#Sense
Signalsystem-sv#Sense