ANALISIS PENDAPATAN DAN NILAI TAMBAH USAHA PRODUK OLAHAN NIRA AREN (GULA AREN) DI DESA MONGIILO KECAMATAN BOULANGO ULU KABUPATEN BONE BOLANGO. VIABEL: Jurnal Ilmiah Ilmu-Ilmu Pertanian, [S. l.], v. 18, n. 1, p. 49–59, 2024. DOI: 10.35457/viabel.v18i1.3442. Disponível em: https://ejournal.unisbablitar.ac.id/index.php/viabel/article/view/3442. Acesso em: 16 dec. 2025.