VON WITZKE, Harald. Welternährung: Qualität und Quantität!. German Journal of Agricultural Economics, [S. l.], v. 51, n. 3, 2002. DOI: 10.52825/gjae.v51i3.1509. Disponível em: https://www.tib-op.org/ojs/index.php/gjae/article/view/1509. Acesso em: 23 nov. 2024.