Iswan M, Djaingsastro AJ, Manurung S. Pengaruh Lingkungan terhadap Produktivitas Kelapa Sawit di Afdeling III Kebun Bah Birung Ulu PT Perkebunan Nusantara IV Regional II. RRJ [Internet]. 2026May23 [cited 2026May23];8(3):2016-23. Available from: https://www.jurnal.ranahresearch.com/index.php/R2J/article/view/2129