Fahim, N. H., and T. A. Imbabi. 2021. “Comparison Between the Brix Refractometer and ELISA for Assessment of Colostrum IgG of Montbeliard x Holstein Cross Dairy Cows”. Tropical Animal Science Journal 44 (3): 356-62. https://doi.org/10.5398/tasj.2021.44.3.356.