Cienfuegos-Rivas, E.G., de Orúe-Ríos, M.A.R., Briones-Luengo, M. and Martínez-González, J.C. 2006. Estimation of pre-weaning productive performance and genetic parameters in beef cattle (Bos taurus) and crosses, VIII Region of Chile. Archivos de Medicina Veterinaria. 38, 1 (Apr. 2006), 69–75. DOI:https://doi.org/10.4067/S0301-732X2006000100010.