Author/Creator
- Organisation for Economic Co-operation and Development81
- Commission of the European Communities57
- United Nations. Economic Commission for Europe45
- United States. Congress. Commission on Security and Cooperation in Europe, author36
- Organisation for European Economic Co-operation33
- European Foundation for the Improvement of Living and Working Conditions32
- European Conference of Ministers of Transport30
- Food and Agriculture Organization of the United Nations28
- European Commission25
- European Conference of Ministers of Transport. Economic Research Centre23
- Business International S.A.22
- United States22
- European Centre for the Development of Vocational Training21
- Conference Board15
- Nordic Council of Ministers15
- Geologian tutkimuskeskus (Finland)14
- Nordkalott Project14
- Norges geologiske undersøkelse14
- Statistical Office of the European Communities14
- Sveriges geologiska undersökning14