ARNOLD, Irene; STOFFEL, Daniela; KÖLLER, Karlheinz. Biogas in Brasilien. agricultural engineering.eu, [S. l.], v. 63, n. 6, p. 362–363, 2008. DOI: 10.15150/lt.2008.882. Disponível em: http://195.37.233.21/landtechnik/article/view/2008-63-6-362-363. Acesso em: 3 juli. 2024.