Geographic Subject
Europe
Russia
4
Asia
3
France
2
India
2
Poland
2
Russia (Federation)
2
Soviet Union
2
United States
2
ASEAN countries
1
Developing countries
1
Dinaric Alps
1
Europe, Northern
1
Germany
1
Germany (West)
1
Hawaii
1
Japan
1
Kievan Rus
1
Middle East
1
Morocco
1
North America
1
Pacific Area
1
Persian Gulf Region
1
Portugal
1
Rome
1
Russia, Northern
1
Turkey
1
Vietnam
1