UMANA, Umana S.; EBONG, Mbuotidem Sampson; GODWIN, Ekanem O. Biomass Production from Oil Palm and Its Value Chain. Journal of Human, Earth, and Future, [S. l.], v. 1, n. 1, p. 30–38, 2020. DOI: 10.28991/HEF-2020-01-01-04. Disponível em: https://hefjournal.org/index.php/HEF/article/view/5. Acesso em: 1 jun. 2025.