Andrade-Becerra, R. J., Z. E. Caro-Carvajal, M. O. Pulido-Medellín, J. L. Porras-Vargas, and J. C. Vargas-Abella. “Prevalence of Mastitis Causing - Bacteria in the Milking Farms of Toca (Boyacá, Colombia)”. Ciencia Y Agricultura, vol. 11, no. 1, 2014, 3487.