1. Lighting techniques for the domestic fowl;Bowman;2. Experiment 1959-60. British Poultry Sci.,1961
2. Poultry lighting for egg production;Dobie;Washington Exp. Sta. Bull.,1946
3. Multiple range and multiple “ F” tests;Duncan;Biom.,1955
4. Comparative Physiology: Photoperiodicity;Farner;Annual Rev. Physiol.,1961
5. Personal communication;Fox,1961