TILLMAN, A. D. Non-protein nitrogen in the feeding of cattle. The Bovine Practitioner, [S. l.], v. 1973, n. 8, p. 9–18, 1973. DOI: 10.21423/bovine-vol1973no8p9-18. Disponível em: https://bovine-ojs-tamu.tdl.org/bovine/article/view/1817. Acesso em: 14 jul. 2024.