Jamaluddin et al. 2023. Tingkat Pengetahuan Karyawan Pemupukan Kelapa Sawit Terhadap Prinsip 4T di PT. REA Kaltim Plantations: Level of Knowledge of Palm Oil Fertilizer Employees Regarding the 4R Principles at PT. REA Kaltim Plantations. Buletin Loupe. 19, 02 (Dec. 2023), 262–232. DOI:https://doi.org/10.51967/buletinloupe.v19i02.2925.