1. The complex nature of the animal protein factor;Carlson;Poultry Sci.,1949
2. Unidentified growth factors required by chicks and poults. 3. Chick studies involving practical-type rations;Combs;Poultry Sci.,1954
3. Couch, J. R., J. R. Reed, Jr., B. L. Reid and J. W. Dieckert, 1952. Distillers solubles and other sources of unidentified factors for promoting the growth of chicks and poults. Proc. 7th Distillers Feed Conference, pp. 59-71.
4. Couch, J. R., J. R. Reed, Jr., R. L. Atkinson and B. E. Welch, 1951. Distillers grain solubles and dried whey with an APF concentrate in broiler feeds. Proc. 6th Distillers Feed Conference, pp. 47-55.
5. Couch, J. R., J. R. Reed, Jr., R. L. Atkinson, R. W. Perrett, B. E. Welch and J. W. Dieckert, 1954. Distillers dried solubles for growth and hatchability. Proc. 9th Distillers Feed Conference, pp. 38-48.