Mellado, Miguel, Edgar Sepúlveda, Cesar Mesa-Herrera, Francisco G Veliz, José R Arevalo, Jesús Mellado, and Angeles De Santiago. 2013. “Effects of Heat Stress on Reproductive Efficiency of High Yielding Holstein Cows in a Hot-Arid Environment”. Revista Colombiana De Ciencias Pecuarias 26 (3):193-200. https://doi.org/10.17533/udea.rccp.324829.