1. New challenges to ecotoxicology
2. The Scientific Aspects of the Chemical Substances Control Law in Japan;Sasaki,1978
3. Directive 176/464;Council of the European Communities;Publication Bulletin of the European Communities,1976
4. Convention against the Chemical Pollution of the river Rhine, International Rhine Commission Secretariat, P.O. Box 309, D-5400 Koblenz, W. Germany