Rn-220
type: Concept
broader: radon
broader: radioactive isotope
preferred label: رادون 220 @fa

radon
type: Concept
narrower: Rn-220
preferred label: رادون @fa

radioactive isotope
type: Concept
narrower: Rn-220
preferred label: ایزوتوپ پرتوزا @fa