~(15)N abundance

~(15)N natural abundance

15N abundance

15N natural abundance

absolute abundance

absolute isotope abundance

absolute isotopic abundance

absolute isotopic abundance of samarium

Abundance analysis

Abundance and deficiency index of nutrient

abundance and deficiency indices

abundance and deficiency’s index

Abundance and distribution

abundance and elimination

Abundance and origin of the element

abundance anomaly

abundance biomass comparison method

abundance classification

abundance coefficient