Hasudungan Siregar, Yusniar Lubis, Syahbudin. THE EFFECT OF ISPO IMPLEMENTATION ON PALM OIL FARMERS’ INCOME IN BANDAR PASIR MANDOGE, ASAHAN DISTRICT. IJSET [Internet]. 2023 Jul. 30 [cited 2025 Nov. 3];2(8):427-36. Available from: https://ijset.org/index.php/ijset/article/view/197