The Cadmium’s presence in soils and sediments of the Río Ayampe, Province Manabí, Ecuador. Revista Científica Ciencias Naturales y Ambientales, [S. l.], v. 8, n. 1, p. 6, 2014. DOI: 10.53591/cna.v8i1.228. Disponível em: https://revistas.ug.edu.ec/index.php/cna/article/view/1725. Acesso em: 5 dec. 2025.