isotope relative abundance
alternative label: abundance ratio
related: element relative abundance
related: isotope
related: geophysics
preferred label: فراوانی نسبی ایزوتوپ @fa
type: Concept

element relative abundance
preferred label: فراوانی نسبی عنصر @fa
type: Concept
related: isotope relative abundance

geophysics
preferred label: زمین‌فیزیک @fa
type: Concept
related: isotope relative abundance

isotope
preferred label: ایزوتوپ @fa
type: Concept
related: isotope relative abundance