Geography
United States
67 results
Mexico
13 results
China
9 results
Soviet Union
9 results
Europe
8 results
Russia (Federation)
7 results
North America
5 results
Africa
3 results
Asia
3 results
Canada
3 results
Developing countries
3 results
Europe, Eastern
3 results
European Union countries
3 results
Japan
3 results
Korea (South)
3 results
Afghanistan
2 results
Cuba
2 results
Hong Kong (China)
2 results
Iran
2 results
Iraq
2 results
Latin America
2 results
Pacific Area
2 results
South America
2 results
Africa, North
1 results
Africa, Portuguese-speaking
1 results
Alaska
1 results
America
1 results
Arctic regions
1 results
Bosnia and Hercegovina
1 results
Caucasus, South
1 results
East Asia
1 results
Estados Unidos
1 results
Eurasia
1 results
Europe, Central
1 results
European Economic Community countries
1 results
Former Soviet republics
1 results
Former communist countries
1 results
France
1 results
Great Britain
1 results
Guatemala
1 results
Hong Kong
1 results
India
1 results
Italy
1 results
Middle East
1 results
North Slope
1 results
Panama
1 results
Panamá
1 results
Persian Gulf Region
1 results
Portugal
1 results
Puerto Rico
1 results
more…