PURWANTO, O. D.; SUDRADJAT, S.; SUPIJATNO, S. Determination of Nitrogen Fertilizer Requirement for Four-Year-Old Oil Palm. Asian Journal of Applied Sciences, [S. l.], v. 5, n. 6, 2017. Disponível em: https://www.ajouronline.com/index.php/AJAS/article/view/5097. Acesso em: 25 apr. 2024.