ELLERSIEK, Hans-Heinrich. Trends bei der Schweinehaltung. agricultural engineering.eu, [S. l.], v. 61, n. 6, p. 358–359, 2006. DOI: 10.15150/lt.2006.1129. Disponível em: http://195.37.233.11/landtechnik/article/view/2006-61-6-358-359. Acesso em: 3 mai. 2024.