BOB, J.; MICHAEL, P. S. Nutrient dynamics under unmanaged rubber, cocoa, and oil palm plantations in a sandy soil under humid lowland tropical climatic conditions. International Journal of Environment, [S. l.], v. 11, n. 1, p. 46–61, 2022. DOI: 10.3126/ije.v11i1.45839. Disponível em: https://www.nepjol.info/index.php/IJE/article/view/45839. Acesso em: 6 may. 2024.