Araya, O., Urzua, R. and Bustamante, H. 2004. The effect of injectable barium selenate on the Glutathion peroxidase activity of horses on pastures. Archivos de Medicina Veterinaria. 36, 1 (Jun. 2004), 31–37. DOI:https://doi.org/10.4067/S0301-732X2004000100003.