BERTA, Attila; BÉRI, Béla. Examinations connected with productive life in Hungarian Holstein Friesian populations. Acta Agraria Debreceniensis, [S. l.], n. 27, p. 32–39, 2007. DOI: 10.34101/actaagrar/27/3098. Disponível em: https://ojs.lib.unideb.hu/actaagrar/article/view/3098.. Acesso em: 1 may. 2024.