HUBERT, J.; ISABU. Two types of survey used with the farmers of Burundi. Les Cahiers de la Recherche Développement, [S. l.], n. 33, p. 41–48, 1993. Disponível em: https://revues.cirad.fr/index.php/crd/article/view/36662. Acesso em: 3 nov. 2024.