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Agusta H, Muhamad Rafiansyah Siregar V, Siswanto S. Application Of Urea Coated By Humic Acid and Nitrogen Inhibitor On Pre Nursery Phase Oil Palm (Elaeis guineensis Jacq.) Seedling. J. Penelitian Kelapa Sawit [Internet]. 2024 Aug. 13 [cited 2026 Sep. 15];32(2):95-110. Available from: http://jurnalkelapasawit.iopri.org/index.php/jpks/article/view/281