Sutarta ES, Wiratmoko D, Akoeb EN. Soil Fertility, Oil Palm Growth and Productivity on Three Pyritic Depths. J. Penelitian Kelapa Sawit [Internet]. 2020 Aug. 1 [cited 2026 Aug. 25];28(2):71-84. Available from: http://jurnalkelapasawit.iopri.org/index.php/jpks/article/view/104