Subject Region
United States
275
Great Britain
128
Canada
30
France
24
Germany
20
India
16
China
12
Pennsylvania
12
Turkey
12
Europe
11
Ireland
11
Europe, Eastern
10
England
9
Mexico
9
Poland
9
Rome
9
Spain
8
Australia
7
Japan
7
Virginia
7
Iran
6
Kenya
6
New York (State)
6
Soviet Union
6
Austria
5
European Union countries
5
Hungary
5
South Africa
5
Former Soviet republics
4
Greece
4
Hong Kong
4
Hong Kong (China)
4
Iraq
4
Israel
4
North Carolina
4
Southern States
4
Chile
3
Cyprus
3
Indonesia
3
Latin America
3
Massachusetts
3
Russia (Federation)
3
Scotland
3
Ukraine
3
Afghanistan
2
Africa, Sub-Saharan
2
Athens
2
California
2
Colombia
2
Denmark
2
more ...