JEREMIA HUTAURUK; E. HARSO KARDHINATA; IHSAN EFFENDI. CALCULATION OF OIL PALM HARVESTER PREMIUM BASED ON SLOPE CLASS BASED ON GEOGRAPHIC INFORMATION SYSTEM IN SEI SILAU PLANTATION PT.PERKEBUNAN NUSANTARA III (PERSERO). International Journal of Economic, Business, Accounting, Agriculture Management and Sharia Administration (IJEBAS), [S. l.], v. 4, n. 1, p. 284–296, 2024. DOI: 10.54443/ijebas.v4i1.1431. Disponível em: https://radjapublika.com/index.php/IJEBAS/article/view/1431. Acesso em: 28 nov. 2025.