NÉMETH, T. Nitrogen Content of Hungarian Soils and Nitrogen Fertilization. Acta Agraria Debreceniensis, [S. l.], n. 9, p. 51–61, 2002. DOI: 10.34101/actaagrar/9/3562. Disponível em: https://ojs.lib.unideb.hu/actaagrar/article/view/3562. Acesso em: 16 apr. 2021.