Subject Region
United States
125
Japan
31
Europe
18
Developing countries
13
China
12
European Union countries
12
Germany
11
Great Britain
10
Asia
9
East Asia
8
Canada
6
Southeast Asia
5
European Economic Community countries
4
Taiwan
4
Africa
3
Arab countries
3
Caribbean Area
3
France
3
India
3
Latin America
3
Mexico
3
Russia (Federation)
3
Africa, Sub-Saharan
2
Chile
2
Developed countries
2
Ecuador
2
Europe, Eastern
2
Germany (West)
2
Pacific Area
2
Peru
2
Sweden
2
Africa, Southern
1
Argentina
1
Asia, Central
1
Australia
1
Barbados
1
Communist countries
1
Davos (Switzerland)
1
Detroit (Mich.)
1
Former Soviet republics
1
Italy
1
Korea (South)
1
Massachusetts
1
Middle East
1
New York (N.Y.)
1
North America
1
Oceania
1
Orient
1
Pacific Ocean
1
Singapore
1
more ...