Effect of age at first calving on reproductive parameters in the first lactation of Holstein and Jersey cattle from Costa Rica. Ciencias Veterinarias, [S. l.], v. 33, n. 1, p. 33–45, 2016. DOI: 10.15359/rcv.33-1.2. Disponível em: https://www.revistas.una.ac.cr/index.php/veterinaria/article/view/7629.. Acesso em: 2 may. 2024.