BITTNER, B. Examination of the sub-regions in the North Great Plain Region. Acta Agraria Debreceniensis, [S. l.], n. 26, p. 158-163, 2007. DOI: 10.34101/actaagrar/26/3071. Disponível em: https://ojs.lib.unideb.hu/actaagrar/article/view/3071. Acesso em: 26 nov. 2020.