Pb/Pb
preferred label: نسبت سرب به سرب @fa
type: Concept
related: Pb-210

lead
preferred label: سرب @fa
type: Concept
narrower: Pb-210

U/Pb
preferred label: نسبت اورانیم به سرب @fa
type: Concept
related: Pb-210

Pb/Th
preferred label: نسبت سرب به توریم @fa
type: Concept
related: Pb-210

Pb-210
related: Pb/Pb
related: U/Pb
related: Pb/Th
related: absolute age
broader: lead
broader: radioactive isotope
preferred label: سرب 210 @fa
type: Concept

absolute age
preferred label: سن مطلق @fa
type: Concept
related: Pb-210

radioactive isotope
preferred label: ایزوتوپ پرتوزا @fa
type: Concept
narrower: Pb-210