ISAAC, V. M.; IJAH, C. J.; UDUAK, I. G.; UWAH, I. D. Assessment of some Micronutrients, Copper, Iron and Zinc (Cu, Fe, Zn) in Soils Formed from Coastal Plain Sand, Akwa Ibom State, Nigeria. Direct Research Journal of Agriculture and Food Science, [S. l.], v. 12, n. 2, p. 201–207, 2024. Disponível em: https://journals.directresearchpublisher.org/index.php/drjafs/article/view/84. Acesso em: 1 may. 2026.