1. ARMSTRONG, W. D. (1951) No title. Trans. 2nd Conf. Metab. Interr., 144. Josiah Macey Jnr. Found, New York.
2. Concerning defects in the enamel of teeth of ancient American Indians;BODECKER;J. Dent. Res.,1930
3. CLEMENT, A. J. (1961) Caries Immunity in Primitive Peoples. Thesis for M.D.S. degree, University of the Witwatersrand.
4. Notes on teeth and gingivae of Central Australian aborigines;CRAN;Austral. J. Dent.,1955
5. The relationship of diet to dental caries;CRAN;Austral. Dent. J.,1959