Jamaluddin; Rahman, M.; Pangaribuan, F. 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. buletinloupe 2023, 19, 262-232.