1. National Academy of Sciences. Drinking Water and Health. National Research Council National Academy of Sciences Washington DC 1977.
2. International Agency for Research on Cancer. Long-term and Short-term Screening Assays for Carcinogens: A Critical Appraisal. IARC Monographs Supplement 2 Lyon 1980.
3. Identification, classification and regulation of potential occupational carcinogens;Occupational Safety and Health Administration;Fed. Reg.,1980
4. Food Safety Council. Proposed System for Food Safety Assessment. Food Safety Council Washington DC 1980.
5. Office of Technology Assessment. Assessment of Technologies for Determining Cancer Risks from the Environment. Congress of the United States Office of Technology Assessment Washington DC 1981.