Pradiko, Iput, Sujadi Sujadi, and Suroso Rahutomo. “PHENOLOGICAL OBSERVATION ON EIGHT OIL PALM (Elaeis Guineensis Jacq.) VARIETIES USING THERMAL UNIT CONCEPT”. Jurnal Penelitian Kelapa Sawit 27, no. 1 (April 24, 2019): 57-69. Accessed December 26, 2024. https://jurnalkelapasawit.iopri.org/index.php/jpks/article/view/71.