Hutajulu PO, Chalil D, Sembiring SA. Efficiency and Marketing Margins Estimation of Oil Palm’s Fresh Fruit Bunches (FFB) in Labuhanbatu Utara and Asahan Regency. Indonesian J. Agric. Res [Internet]. 2019Sep.29 [cited 2024May4];2(2):67 - 6. Available from: https://talenta.usu.ac.id/InJAR/article/view/1209