1. Rickets in mature chickens;Doyle;Poultry Sci.,1925
2. Ellis, N. R., W. R. Kauffman and C. O. Miller, 1940. Composition of the principal feedstuffs used for livestock. 1939 U.S.D.A. Yearbook of Agriculture, pp.1065–1074.
3. Interference of heated diets with calcification in chickens;Hammond;Poultry Sci.,1942
4. Modifications in the chick vitamin D assay procedure;Johnson;Poultry Sci.,1942
5. Kohn, Frank J., 1928. Thirty-eighth Wyo. Agr. Expt. Sta. Report, p. 147.