Region
Soviet Union
19
United States
16
Sweden
15
Europe
11
Russia
11
Italy
10
Rome
6
California
5
Scandinavia
5
England
4
France
4
Rome (Italy)
4
Developing countries
3
European Union countries
3
États-Unis
3
India
3
New York
3
New York (State)
3
Suède
3
Austria
2
Bangladesh
2
Cambodia
2
Don River Valley (Russia)
2
Etruria
2
Georgia (Republic)
2
Great Britain
2
Ireland
2
Los Angeles
2
Manhattan (New York, N.Y.)
2
Nevada
2
Outer space
2
Russia (Federation)
2
Turkey
2
URSS
2
Aberfan
1
Arab countries
1
Arctic Regions
1
Arctic regions
1
Atlanta
1
Atlanta (Ga.)
1
Belgium
1
Bolivia
1
Boston
1
Brazil
1
Burma
1
Cambodge
1
Canton
1
China
1
Cuba
1
Czechoslovakia
1
more ...