1. An Introduction to Gastroenterology;Alvarez, W.C.,1948
2. The rate of progress of food residues through the bowel;Alvarez, W.C.; Freedlander, B.L.;Journal of the American Medical Association,1924
3. The Digestive Tract: a Radiological Study of its Anatomny;Barclay, A.E.;Physiology, and Pathology,1933
4. Epidemiology of cancer of the colon and rectum;Burkitt, D.P.;Cancer,1971
5. The intestinal rate and form of the faeces;Burnett, F.L.;American Journal of Roentgenology,1923