GLATZ, P.C. Growth of Beaks in Layers Following Re-trimming. International Journal of Poultry Science, Pakistan, v. 1, n. 5, p. 158–160, 2002. DOI: 10.3923/ijps.2002.158.160. Disponível em: https://ijpsjournal.org/index.php/ijps/article/view/39. Acesso em: 22 sep. 2025.