1. Report of the first session of the Inter-Governmental Working Group on Marine Pollution,1971
2. Report of the United Nations Conference on the Human Environment,1973
3. Report of the United Nations Conference on the Human Environment,1973
4. “Institutional and Financial Arrangements for International Environmental Co-operation”, General Assembly, Resolution 2997 (XXVII), 15 December 1972 (United Nations, New York, 1973).
5. Tourism and the Environment in the Mediterranean Region: Towards a better utilization of the tourism resources in the Mediterranean,1976