Kebede, G.; Feyissa, F.; Mohammed, H.; Assefa, G.; Alemayehu, M.; Mengistu, A.; Tesfaye, M. Yield Performance and Nutritive Value of Vetch Species Grown on Nitosol and Vertisol Conditions in the Central Highlands of Ethiopia. OMO Int. J. Sci. 2019, 2, 60-81.