HUTAJULU, P. O.; CHALIL, D.; SEMBIRING, S. A. Efficiency and Marketing Margins Estimation of Oil Palm’s Fresh Fruit Bunches (FFB) in Labuhanbatu Utara and Asahan Regency. Indonesian Journal of Agricultural Research, [S. l.], v. 2, n. 2, p. 67–76, 2019. DOI: 10.32734/injar.v2i2.1209. Disponível em: https://talenta.usu.ac.id/InJAR/article/view/1209. Acesso em: 20 aug. 2025.