BERG, Werner; KRAUT, Doris. Verwerten – aber wie?. agricultural engineering.eu, [S. l.], v. 52, n. 1, p. 20–21, 1997. DOI: 10.15150/lt.1997.2577. Disponível em: https://www.agricultural-engineering.eu/landtechnik/article/view/1997-52-1-020-021. Acesso em: 23 apr. 2024.