1. Friable meal produced from feathers;Binkley;American Egg Poultry Review,,1951
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3. Effects of processing methods and amino acid supplementation on dietary utilization of feather meal protein by chicks;Naber;Poultry Sci.,1961
4. National Academy of Sciences---National Research Council, 1966. Nutrient requirements of domestic animals. I. Nutrient requirements of poultry. National Research Council Publication 1345: 23-45.
5. Statistical Methods.;Snedecor,1967