NOWAK, A. Differentiation in cereal production among Member States of the European Union. Polish Journal of Agronomy, [S. l.], v. 40, n. 40, p. 7–15, 2020. DOI: 10.26114/pja.iung.395.2020.40.02. Disponível em: https://journals.iung.pl/index.php/pja/article/view/39. Acesso em: 7 lis. 2024.