Transforming Onion Peels into Liquid Organic Fertilizer: Empowering Students of SMP N 3 Salimpaung in Environmentally-Based Education. PRAXIS: Jurnal Pengabdian kepada Masyarakat, [S. l.], v. 3, n. 2, p. 7–16, 2024. DOI: 10.47776/praxis.v3i2.1424. Disponível em: https://journal.unusia.ac.id/index.php/praxis/article/view/1424. Acesso em: 9 nov. 2025.