REFERENCES
- Branion, H. D., and D. C. Hill 1953. Poultry Science 32: 1. 151–158.
- Combs, G. F., G. F. Heuser, and L. C. Norris 1948. Poultry Science 27: 2; 238–240.
- March, B., J. Biely and R. J. Young, 1950. Poultry Science 29: 3. 444–449.
- Schaible, P. J., 1949. The Feed Bag 25: 4. 57.