Region
Africa, Southern
1
Africa, Sub-Saharan
1
Arab countries
1
Argentina
1
Asia
7
Australia
2
Australie
1
Austria
1
Brazil
1
Canada
2
China
7
Denmark
2
Developing countries
10
East Asia
13
Etats-Unis
1
Europe
13
Europe, Central
2
Europe, Eastern
2
Europe, Southern
1
Europe, Western
1
European Economic Community countries
3
European Union countries
4
Finland
2
Former Soviet republics
1
France
4
Germany
9
Germany (West)
4
Great Britain
4
Hong Kong (China)
1
India
1
Ireland
2
Israel
2
Italy
1
Japan
22
Japon
1
Korea (South)
4
Latin America
1
Mediterranean Region
1
Mexican-American Border Region
1
Mexico
2
Middle East
2
New Zealand
1
Princeton <NJ, 1993>
1
Russia (Federation)
1
Saudi Arabia
2
Scandinavia
1
Singapore
1
South Africa
2
Southeast Asia
7
Soviet Union
1
more ...