Perea, J., Blanco Penedo, I., Barba, C., Angón, E., & García, A. (2014). Organic beef farming in Spain: typology according to livestock management and economic variables. Revista Científica De La Facultad De Ciencias Veterinarias De La Universidad Del Zulia, 24(4). Retrieved from https://www.produccioncientificaluz.org/index.php/cientifica/article/view/7228