BERG, Werner. Minderung von Emissionen aus der Tierhaltung. agricultural engineering.eu, [S. l.], v. 52, n. 5, p. 262–263, 1997. DOI: 10.15150/lt.1997.2514. Disponível em: https://www.agricultural-engineering.eu/landtechnik/article/view/1997-52-5-262-263. Acesso em: 25 apr. 2024.