1. Pryde, E. H., This volume.
2. “U.S. Energy Through the Year 2000,”;Dupree,1972
3. Plant seeds as protein sources of food or feed. Evaluation based on amino acid composition of 379 species
4. U.S. Foreign Agricultural Trade Statistical Report, Fiscal Year 1976, Economic Research Service, U.S. Department of Agriculture, Washington, D.C., 1976.