Olawumi, Simeon O., and Adetola I. Adeoti. “Comparative Economic Analysis of Black and Brown Commercial Layer Strains in Nigeria”. International Journal of Poultry Science 8, no. 10 (September 15, 2009): 1011–1013. Accessed June 10, 2026. https://ijpsjournal.org/ijps/article/view/1295.