Ámbito geográfico
United States
17
Germany
10
Europe
6
Spain
4
Africa
3
England
3
Great Britain
3
Netherlands
3
Albania
2
America
2
California
2
China
2
Colombia
2
France
2
Ljubljana (Slovenia)
2
Los Angeles
2
Poland
2
South Asia
2
Soviet Union
2
États-Unis
2
Africa, West
1
Amerika
1
Amsterdam
1
Arctic Ocean
1
Arctic Regions
1
Arctic regions
1
Austria
1
Bougainville Island (Papua New Guinea)
1
Bremen (Germany)
1
Bulgaria
1
Californie
1
Canada
1
Chile
1
Congo
1
Congo (Brazzaville)
1
Congo (Democratic Republic)
1
Congresses
1
Costa Rica
1
Czech Republic
1
Developing countries
1
Estados Unidos
1
Europe, Central
1
Europe, Eastern
1
Europe, Northern
1
Germany (West)
1
Haiti
1
Hawaii
1
Holy Roman Empire
1
Inde
1
India
1
más…