telegraph traffic
type: Concept
preferred label: lennätinliikenne @fi
preferred label: telegraftrafik @sv
related: telegraphy

telegraphy
type: Concept
preferred label: telegrafi @sv
preferred label: sähkötys @fi
broader: communication
related: morse code
related: telegraph traffic
in scheme: conceptscheme

communication
type: Concept
preferred label: kommunikation @sv
preferred label: viestintä @fi
narrower: telegraphy

morse code
type: Concept
preferred label: morsealfabetet @sv
preferred label: morseaakkoset @fi
related: telegraphy