Subject Region
United States
184
Great Britain
41
Europe
15
Canada
13
Africa
10
China
10
England
9
Australia
8
Germany
7
Africa, Sub-Saharan
6
Latin America
5
Colombia
4
India
4
Japan
4
Mexico
4
Netherlands
4
Scotland
4
Brazil
3
California
3
France
3
Pacific Area
3
Russia (Federation)
3
South Africa
3
Africa, French-speaking
2
Africa, Southern
2
Asia
2
Caribbean Area
2
Caribbean, English-speaking
2
Denmark
2
Developing countries
2
East Asia
2
Germany (East)
2
Korea (South)
2
New England
2
Nigeria
2
Paris
2
Québec (Province)
2
Southeast Asia
2
Soviet Union
2
Sweden
2
Alabama
1
Albania
1
Amsterdam
1
Amsterdam (Netherlands)
1
Ankara
1
Ankara (Turkey)
1
Appalachian Region
1
Arab countries
1
Argentina
1
Arkansas
1
more ...