Region
United States
61
Great Britain
40
Japan
34
Europe
9
France
7
China
6
Asia
4
Developing countries
4
European Economic Community countries
4
Germany (West)
4
Germany
3
Sweden
3
East Asia
2
Europe, Eastern
2
Germany, West
2
Russia
2
Africa
1
Economic policy
1
Environmental aspects
1
Former Soviet republics
1
India
1
Management
1
Netherlands
1
OECD countries
1
Russia (Federation)
1
South America
1
Tennessee
1
Yugoslavia
1