Geographic Subject
Soviet Union
6
Indonesia
4
India
3
South Asia
3
Africa
2
Asia, Southeastern
2
Uzbekistan
2
Amazon River Region
1
Argentina
1
Asia
1
Azerbaijan
1
Bengal (India)
1
Brazil
1
Communist countries
1
Developing countries
1
Hungary
1
Ireland
1
Japan
1
Laos
1
Mauritania
1
Nicaragua
1
Russia (Federation)
1
Taiwan
1
Tanzania
1
Ukraine
1
United States
1