1. The effect of environmental conditions on winter egg production;Bruckner;Poultry Sci.,1936
2. The relation of temperature to egg production;Graham;Poultry Sci. Proc. Twenty-Second Annual Meeting,1930
3. Homes for laying hens;Goodman;Cornell Ext. Bul.,1952
4. Hereditary and environmental factors affecting viability and egg production;Hays;Massachusetts Agr. Exp. Sta. Bul.,1932
5. Factors affecting fertility in Rhode Island Reds;Hays;Massachusetts Agr. Exp. Sta. Bul.,1939