FRITZSCHE, Stephan; WITZEL, Ernst. Investitionsbedarf in der Ferkelproduktion. agricultural engineering.eu, [S. l.], v. 63, n. 3, p. 176–177, 2008. DOI: 10.15150/lt.2008.812. Disponível em: http://195.37.233.11/landtechnik/article/view/2008-63-3-176-177. Acesso em: 18 mai. 2024.