LÁNG, István. A Few Thoughts About the Implementation of Sustainability in Hungary. Acta Agraria Debreceniensis, [S. l.], n. 9, p. 41–44, 2002. DOI: 10.34101/actaagrar/9/3560. Disponível em: https://ojs.lib.unideb.hu/actaagrar/article/view/3560.. Acesso em: 7 may. 2024.