1.: Effects of drugs on the foetus : proceedings of the symposium in Paris, January 1963 2.: Viewpoints on the study of drug toxicity : proceedings of the symposium in Leyden, June 1963 3.: Evaluation of the potential carcinogenic action of a drug : proceedings of the symposium in Lausanne, January 1964 4.: Some factors affecting drug toxicity : proceedings of the meeting held in Cambridge, England, July 1964 |