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Subject (Region)
- Developing countries422
- United States11
- Asia9
- Developed countries6
- Africa4
- Europe3
- Europe, Eastern3
- European Union countries3
- Latin America3
- East Asia2
- Japan2
- Tropics2
- 2.1
- Africa, Sub-Saharan1
- BRIC countries1
- Canada1
- Communist countries1
- Congo (Democratic Republic)1
- Developing conditions1
- European Economic Community countries1