VARGAS, J. C.; BENÍTEZ, D.; TORRES, V.; RÍOS, S.; SORIA, S. Factors determining the efficiency of milk production in systems of double purpose in Pastaza province, Ecuador. Cuban Journal of Agricultural Science, [S. l.], v. 49, n. 1, 2016. Disponível em: https://cjascience.com/index.php/CJAS/article/view/541. Acesso em: 8 may. 2024.