- Organisation for Economic Co-operation and Development countries (10)
- Commercial policy--Congresses (1)
- Education--Evaluation--Statistics--Cross-cultural studies (1)
- Educational indicators--Cross-cultural studies (1)
- General Agreement on Tariffs and Trade (Organization)--Congresses (1)
- International trade--Congresses (1)
- Revenue (1)
- Uruguay Round (1987- )--Congresses (1)