1. U. Saffiotti, Scientific bases of environmental carcinogenesis and cancer prevention: developing an interdisciplinary science and facing its ethical implications, J. Toxicol. Environ. Health 2:1435 (1977).
2. International Union Against Cancer, Report of Symposium on potential cancer hazards from chemical additives and contaminants to foodstuffs, Acta Unio Intl. Contra Cancrum 13:170 (1957).
3. P. Shubik and J. Sice, Chemical carcinogenesis as a chronic toxicity test. A review, Cancer Res. 16: 728 (1956).
4. Food Protection Committee, Food and Nutrition Board, Problems in the evaluation of carcinogenic hazards from the use of food additives, Cancer Res. 21: 429 (1961).
5. Fifth Report of the Joint FAO/WHO Expert Committee on Food Additives, Evaluation of carcinogenic hazards of food additives, WHO Tech. Rept. Series 220 (1961).