IATE-1380934

Subject Field	unknown
Is Reference of	Toonfrequente signalering-nl#Sense
	Φωνόσυχνη σηματοδοσία-el#Sense
	Tonfrekvenssignalering-sv#Sense
	Audio frequency signaling-en#Sense
	Audiofrekvenssignalering-da#Sense
	Zeichengabe mit Tonfrequenz-de#Sense
	Äänitaajuusmerkinanto-fi#Sense
	Audio frequency signalling-en#Sense
	Signalisation à fréquences vocales-fr#Sense
	Voice-frequency signalling-en#Sense
	Señalización por frecuencia vocal-es#Sense
	Akustisk frekvenssignalering-da#Sense
	Voice-frequency signaling-en#Sense
	Señalización de frecuencias vocales-es#Sense
	Segnalazione a frequenze vocali-it#Sense