erbium
type: Concept
alternative label: Er
broader: rare earth metal
preferred label: اربیم @fa
related: erbium compounds
related: erbium alloy
scope note: see also nucleus with ......

rare earth metal
type: Concept
narrower: erbium
preferred label: فلز خاک کمیاب @fa

erbium compounds
type: Concept
preferred label: ترکیبات اربیم @fa
related: erbium

erbium alloy
type: Concept
preferred label: آلیاژ اربیم @fa
related: erbium