radioactive material
type: Concept
preferred label: radioaktiva ämnen @sv
preferred label: radioaktiiviset aineet @fi
related: half life

half life
type: Concept
broader: other period of time
in scheme: conceptscheme
preferred label: halveringstid @sv
preferred label: puoliintumisaika @fi
related: radioactive material

other period of time
type: Concept
narrower: half life
preferred label: annan tidsperiod @sv
preferred label: muu ajanjakso @fi