IARC /INTERNATIONAL AGENCY FOR RESEARCH ON CANCER/ MONOGRAPHS 1980 suppl.2. 536,259 Long-term and short-term screening assays for carcinogens: a critical appraisal. Reports of IARC ad hoc Working Groups which met in Hanover, F.R.G., 7-9 June, 1979, at a meeting organized by the Medizinische Hochschule Hanover, the Commission of the European Communities and the IARC. Lyon 1980 IARC 80 s. 426, World Health Organization International Agency for Research on Cancer IARC Monographs, Su Appl. 2