1. Diseases of Colon and Anorectum;Turell,1959
2. Embryology of alimentary tract with special emphasis on colon and rectum;Snyder,1959
3. Embryology of alimentary tract with special emphasis on colon and rectum;Snyder,1958
4. Congenital absence of most of colon;Zaidi;J. Dis. Child.,1959
5. Duplication of sigmoid colon;Roberts;Ann. Surg.,1959