MATZEN, Ricard. Separation of Liquid Pig Manure. agricultural engineering.eu, [S. l.], v. 54, n. 2, p. 104–105, 1999. DOI: 10.15150/lt.1999.2304. Disponível em: http://195.37.233.11/landtechnik/article/view/1999-54-2-104-105. Acesso em: 4 mai. 2024.