RANDEL, P. F. Comparison of Simple vs. Complex Concentrate Mixtures for Dairy Cattle in Puerto Rico: Feeding Lactating Cows Receiving Fair-Quality Forage. The Journal of Agriculture of the University of Puerto Rico, [S. l.], v. 49, n. 3, p. 331–341, 1965. DOI: 10.46429/jaupr.v49i3.13033. Disponível em: https://revistas.upr.edu/index.php/jaupr/article/view/13033. Acesso em: 29 may. 2023.