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Subject (Region)
- Developing countries93
- United States30
- Europe, Eastern16
- Russia (Federation)8
- Developed countries5
- Western countries5
- BRIC countries3
- China3
- Argentina2
- Chile2
- East Asia2
- Europe2
- Europe, Central2
- European Economic Community countries2
- Italy2
- Southern Hemisphere2
- Soviet Union2
- European Union countries1
- Former Soviet republics1
- India1