1. Multiple range and multiple F tests;Duncan;Biometrics,,1955
2. The vitamin B6requirement of chicks;Fuller;Poultry Sci.,1959
3. The vitamin requirements of poultry;Hogan;Nutrition Abstr. Rev.,1950
4. The comparative pyridoxine requirements of chicks and turkey poults;Kratzer;Poultry Sci.,1947
5. National Research Council, 1966. Nutrient requirements of domestic animals. No. 1, Nutrient requirements of poultry, 5th rev. ed., Publication 1345.