1. Effects of heredity and certain environmental factors on the incidence of blood spots in chicken eggs;Jeffrey;Poultry Sci.,1943
2. Effect of season and heredity on the incidence of blood spots (Abs.);Lerner;Poultry Sci.,1942
3. The problem of blood clots and meat spots in chicken eggs;Nalbandov;Poultry Sci.,1944
4. Controlling blood and meat spots;Nalbandov;(Abs.). Poultry Sci.,1944
5. Variations in egg quality characters of certain breeds, varieties, and strains of chickens;Van Wagenen;J. Agr. Res.,1937