1. The bursa of Fabricius and antibody production;Glick;Poultry Sci.,1956
2. The avian embryo. Structural and functional development;Romanoff,1960
3. The lymphoid system;Payne,1971
4. The effect of thymus on lymphoid tissue;Ruth,1964
5. Observations on the so called thymus II of birds;Scothorne;J.Anat.,1957