OWONUBI, Ayodele. Status of micronutrients in soils of a basement complex area of Samaru, Zaria, Nigeria. Ife Research Publications in Geography, [S. l.], v. 9, n. 1, p. 113–131, 2010. Disponível em: https://irpg.oauife.edu.ng/index.php/irpg/article/view/8. Acesso em: 19 oct. 2025.