Yazman, J. A., R. E. McDowell, H. Cestero, F. Román-García, and J. A. Arroyo-Aguilu. “Supplementation of Dairy Cows Grazing Intensively Managed Tropical Grass Pastures at Two Stocking Rates”. The Journal of Agriculture of the University of Puerto Rico 63, no. 3 (July 1, 1979): 281–293. Accessed December 22, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/10286.