Introduction of cow manure biogas using the HDPE geomembrane model in Pinogu, Gorontalo. Community Empowerment, [S. l.], v. 8, n. 5, p. 621–629, 2023. DOI: 10.31603/ce.8342. Disponível em: https://coba.unimma.ac.id/ce/article/view/8342. Acesso em: 30 sep. 2026.