1. Breeding for egg production;Ball;I. Utah Agr. Exp. Sta. Bul.,1916
2. A physical, chemical, and physiological study of high and low hatching lines of Single Comb White Leghorns;Bronkhorst;Thesis, Cornell University.,1933
3. Egg laying characteristics of the hen;Dryden;Ore. Agr. Exp. Sta. Bul.,1921
4. Factors influencing hatchability in the domestic fowl;Funk;Mo. Agr. Exp. Sta. Bul.,1934
5. Seasonal and annual egg production correlation tables;Hervey;N. J. Agr. Exp. Sta. Bul.,1924