Values for protein/fat ratio and milk urea nitrogen in milk from dairy cows in northern Alajuela and Heredia, Costa Rica. Ciencias Veterinarias, [S. l.], v. 34, n. 2, p. 67–80, 2017. DOI: 10.15359/rcv.34-2.1. Disponível em: https://www.revistas.una.ac.cr/index.php/veterinaria/article/view/9030.. Acesso em: 29 apr. 2024.