RANDEL, P. F. Mixed chopped and ground grass hay for dairy cows vs. grazing plus concentrates. The Journal of Agriculture of the University of Puerto Rico, [S. l.], v. 77, n. 3-4, p. 193-199, 1993. DOI: 10.46429/jaupr.v77i3-4.4207. Disponível em: https://revistas.upr.edu/index.php/jaupr/article/view/4207. Acesso em: 16 jan. 2022.