GERIGHAUSEN, Heinz. Techniktrends für die organische Düngung. agricultural engineering.eu, [S. l.], v. 59, n. 6, p. 318–319, 2004. DOI: 10.15150/lt.2004.1363. Disponível em: http://195.37.233.11/landtechnik/article/view/2004-59-6-318-319. Acesso em: 29 apr. 2024.