QUIPUZCO USHÑAHUA, Lawrence; BALDEÓN QUISPE, Wilfredo; TANG CRUZ, Oscar. Quality assessment of biogas and biol from two cow manure mixtures in PVC tubular biodigesters. Revista del Instituto de investigación de la Facultad de minas, metalurgia y ciencias geográficas, [S. l.], v. 14, n. 27, 2011. DOI: 10.15381/iigeo.v14i27.690. Disponível em: https://revistasinvestigacion.unmsm.edu.pe/index.php/iigeo/article/view/690.. Acesso em: 30 jun. 2024.