Geographic Subject
Soviet Union
20
Former Soviet republics
7
Developing countries
2
Earth
2
Europe, Eastern
2
Arctic regions
1
Atlantic Ocean
1
Eastern, Europe
1
France
1
Germany (East)
1
Mars (Planet)
1
Matallurgy
1
Mediterranean Region
1
Moon
1
Outer space
1
Poland
1
Romania
1
Russia (Federation)
1
Sun
1
Yugoslavia
1