Vilaboa ArronizJulio, Quirós MadrigalOlman, Díaz RiveraPablo, WingChing-JonesRodolfo, Brower KeatingNatalie, and Zetina CórdobaPedro. 1. Livestocks systems with tropical dairy creolle (Reyna) in Costa Rica. Agronomía Mesoamericana 23 (1), 167-78.