Subject Region
United States
34
China
6
Argentina
4
Australia
4
Great Britain
4
Egypt
3
Europe
3
Russia
3
Taiwan
3
England
2
Germany
2
Mexico
2
Soviet Union
2
Africa
1
Arab countries
1
Asia
1
Colombia
1
European Union countries
1
France
1
Guatemala
1
Indonesia
1
Japan
1
Latin America
1
Leatherhead
1
Leatherhead (England)
1
Louisiana
1
Middle East
1
Nicaragua
1
Ontario
1
Réunion
1