Syamsafitri, S., Gunawan, I. ., Rambe, R. D. H. ., Dalimunthe, M. ., & Nurhayati, N. (2023). Conversion of Rubber Land Into Palm Oil and Its Effect on Production in North Sumatra. Jurnal Penelitian Pendidikan IPA, 9(3), 1503–1511. https://doi.org/10.29303/jppipa.v9i3.3349