Rodríguez, José, Edmundo Rivera, and José Vicente-Chandler. “Productivity of Four Intensively Managed Grasses under Grazing Management in the Humid Hill Region of Puerto Rico”. The Journal of Agriculture of the University of Puerto Rico 64, no. 2 (April 1, 1980): 236–240. Accessed July 18, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/10238.