MAXIMIZING THE INCOME OF OIL PALM FARMERS IN BATU BETUMPANG VILLAGE PULAU BESAR DISTRICT, SOUTH BANGKA REGENCY: MAKSIMALISASI PENDAPATAN PETANI KELAPA SAWIT DI DESA BATU BETUMPANG KECAMATAN PULAU BESAR KABUPATEN BANGKA SELATAN. JIA 2023, 5 (1), 47-58. https://doi.org/10.33019/jia.v5i1.4083.