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Mariyah, Mariyah, Yusman Syaukat, Sri Hartoyo, Anna Fariyanti, & Bayu Krisnamurthi.
" Penentuan Umur Optimal Peremajaan Kelapa Sawit di Kabupaten Paser Kalimantan Timur." <em>Jurnal Ekonomi Kuantitatif Terapan</em> [Online], (2018): 103-115. Web. 30 Aug. 2026