1. Thesis (unpublished). Bodleian Library;Acheson, E.D.,1958
2. Acheson, R. M. (1960a). Brit. J. prev. soc. Med., 14, 139.
3. Acheson, R. M. (1960b). Ibid. 14, 99.
4. Acheson, R. M. and Acheson, E. D. (1958). Ibid., 12, 147.
5. Hemmens, W. F., and Jessop, W. J. E. (1958).