SZÉP, A. Possibilities of ecological farming in the North Great Plain Region. Acta Agraria Debreceniensis, [S. l.], n. 22, p. 69–71, 2006. DOI: 10.34101/actaagrar/22/3194. Disponível em: https://ojs.lib.unideb.hu/actaagrar/article/view/3194. Acesso em: 21 jan. 2022.