GJAE. Wirtschaftszahlen. German Journal of Agricultural Economics, [S. l.], v. 66, n. 4, 2017. DOI: 10.52825/gjae.v66i4.2078. Disponível em: https://www.tib-op.org/ojs/index.php/gjae/article/view/2078. Acesso em: 22 nov. 2024.