Instrumental Neutron Activation Analysis (INAA) As-sessment of REE of Soil from Mining Site Umuahia, Abia State, South East, Nigeria. Braz. J. Radiat. Sci. [Internet]. 28 de febrero de 2024 [citado 21 de julio de 2025];12(1):e2336. Disponible en: https://www.bjrs.org.br/revista/index.php/REVISTA/article/view/2336