Geographic Subject
Soviet Union
108
Russia (Federation)
64
India
19
United States
13
Kazakhstan
10
Poland
10
Russian Far East (Russia)
10
Africa
9
Russian Far East
9
Belgium
8
Siberia
8
Ural Mountains Region
8
Asia
7
Asia, Central
7
Europe, Eastern
7
Indonesia
7
South Africa
7
Europe
6
Former Soviet republics
6
Germany (West)
6
Siberia (Russia)
6
Ukraine
6
East Asia
5
Congo (Democratic Republic)
4
Developing countries
4
Finland
4
France
4
Georgia (Republic)
4
Arctic regions
3
Asia, Southeastern
3
Brazil
3
Bulgaria
3
Byzantine Empire
3
Caucasus
3
China
3
Cuba
3
Egypt
3
Estonia
3
Japan
3
Middle East
3
Russia
3
Sun
3
Argentina
2
Armenia
2
Azerbaijan
2
Bashkortostan
2
Communist countries
2
Earth
2
Ethiopia
2
Germany
2
more ...