Spatial Variation of Rare Earth Elements in Agricultural Soils Collected from Different Geographical Regions in Vietnam. Pakistan Journal of Analytical & Environmental Chemistry, Pakistan, v. 24, n. 2, p. 240–248, 2024. DOI: 10.21743/pjaec/2023.12.12. Disponível em: https://pjaec.pk/index.php/pjaec/article/view/64. Acesso em: 3 jul. 2025.