1. Report of the United Nations Scientific Committee on the Efects of Atomic Radiation (New York, 1958).
2. Huxley, “Biological Aspects of Cancer” (Allen and Unwin, London, 1958). Boyland, ed., Brit. Med. Bull., 14, No. 2 (1958). Strong, ed., Ann. New York Acad. Sci., 71, Art. 6 (1958). Wolstenholme and O'Connor, ed., “CIBA Fondation Symposium on Carcinogenesis. Mechanisms of Action” (Churchill, London, 1959). Levan, Statens Naturvetenskapliga Forskningsråds Åsbok, 12, 212 (Stockholm, 1959). Bayreuther, K., Nature, 186, 6 (1960).
3. Arley and Iversen, Acta Path. Microbiol. Scand., 33, 133 (1953), see p. 143.
4. Mole, Brit. Med. Bull., 14, 188 (1958).
5. Bacq and Alexander, “Fundamentals of Radiobiology” (Butterworth, London, 1955); see especially Chapter 11.