1. The structure of the alimentary tract;Hill,1971
2. Digestive Systems;Andrew,1974
3. The influence of the intestinal microflora on nutrition;Jayne-Williams,1971
4. Ontogeny of the chicken humoral immune system;Leslie;Am. J. Vet. Res.,1975
5. Cellular interactions occurring during primary lymphoid organ ontogeny in birds;Peault,1987