KOCH, Krisztina. Economic Aspects of Winter Wheat and Sunflower Production Under Organic Farming Methods. Acta Agraria Debreceniensis, [S. l.], n. 13, p. 256–261, 2004. DOI: 10.34101/actaagrar/13/3419. Disponível em: https://ojs.lib.unideb.hu/actaagrar/article/view/3419.. Acesso em: 7 may. 2024.