Castillo-BadillaGloriana, Salazar-CarranzaMauren, Murillo-HerreraJaime, and Romero-ZúñigaJuan. “Effect of Age at First Calving on Productive Parameters in Costa Rican Jersey Cows.”. Agronomía Mesoamericana 24, no. 1 (1): 177-187. Accessed May 16, 2021. https://revistas.ucr.ac.cr/index.php/agromeso/article/view/9796.