1. Agriculture H;Walt,1963
2. and , Experimental designs. Wiley, New York 1957.
3. American Association of Cereal Chemists (AACC). Approved methods (formerly cereal laboratory methods), 7th ed. The association, St. Paul, Minn., 1962.
4. Association of Official Agricultural Chemists (AOAC). Methods of analysis, 10th ed. The association, Washington, D. C., 1965.
5. A METHOD OF EXPRESSING NUMERICALLY THE GROWTH-PROMOTING VALUE OF PROTEINS