CHRISTL, Sylvia; HAIDN, Bernhard. Arbeitszeiten in Schweinemastbetrieben. agricultural engineering.eu, [S. l.], v. 54, n. 4, p. 246–247, 1999. DOI: 10.15150/lt.1999.2228. Disponível em: https://www.agricultural-engineering.eu/landtechnik/article/view/1999-54-4-246-247. Acesso em: 29 apr. 2024.