RANDEL, P. F. Comparison of Simple vs. Complex Concentrate Mixtures for Dairy Cattle in Puerto Rico: Feeding Heifers in Dry Lot. The Journal of Agriculture of the University of Puerto Rico, [S. l.], v. 49, n. 3, p. 342–349, 1965. DOI: 10.46429/jaupr.v49i3.13034. Disponível em: https://revistas.upr.edu/index.php/jaupr/article/view/13034. Acesso em: 28 jun. 2022.