WITZEL, Ernst. Investitionen und Kosten von Legehennenställen. agricultural engineering.eu, [S. l.], v. 64, n. 5, p. 347–349, 2009. DOI: 10.15150/lt.2009.691. Disponível em: http://195.37.233.21/landtechnik/article/view/2009-64-5-347-349. Acesso em: 16 nov. 2024.