REFERENCES
- French, M. H.—Dept. Vety. Science, An. Husb. T.T. Bull. 5, 1940.
- Heywang, B. W.—Poultry Sci. 19 (1942), 29.
- Wright, F. S.—J. Min. Agric. England 50 (1943), 92.
- Halnan, E. T.—Scientific Principles of Poultryn Feeding 4th Edn., 1936.
- French, M. H.—E. Afr. Agric. J. 6 (1940), 109.