Geographic Subject
India
12
Soviet Union
10
Asia, Southeastern
9
Russia (Federation)
6
Indonesia
5
Russia
5
United States
5
Asia
3
Developing countries
3
Japan
3
Latin America
3
South Asia
3
China
2
Europe
2
Finland
2
Middle East
2
Africa
1
Asia, Central
1
Balkan Peninsula
1
Burma
1
East Asia
1
Egypt
1
Former Soviet republics
1
Indian Ocean Region
1
Kievan Rus
1
Korea
1
Pacific Area
1
Palestine
1
Poland
1
South Africa
1
Sri Lanka
1
Ukraine
1
Vietnam
1