VÁRALLYAY, G.; LÁNG, I. The dual function of soil: natural resources and production site. Acta Agraria Debreceniensis, [S. l.], n. 1, p. 5–19, 2001. DOI: 10.34101/actaagrar/1/3580. Disponível em: https://ojs.lib.unideb.hu/actaagrar/article/view/3580. Acesso em: 6 jul. 2022.