1. National Cancer Institute, 4th Annual Collaborative Conference, Carcinogenesis Program, Orlando, Fla., Feb. 22–26(1976)
2. Clayson, D., Human epidemiology and animal laboratory correlations in chemical carcinogenesis meeting, Mescalero, New Mexico, June 1–4(1977)
3. Kennedy adds chemical amendments to clean air act; hears EPA's current efforts;Anon;Toxic Materials News,1977
4. Synthetic Organic Chemicals;US Tariff Commission,1964
5. WHO-NIEHS Symposium on Potential Health Hazards from Technological Developments in Plastic and Synthetic Rubber Industries;Vouk,1976