HERRMANN, Klaus. Meilensteine der Landtechnik. agricultural engineering.eu, [S. l.], v. 64, n. 1, p. 64–66, 2009. DOI: 10.15150/lt.2009.916. Disponível em: http://195.37.233.11/landtechnik/article/view/2009-64-1-064-066. Acesso em: 29 apr. 2024.