Subject Region
United States
320
Great Britain
86
Japan
37
Developing countries
32
England
30
India
28
Europe
25
Canada
24
Mexico
21
China
18
Massachusetts
18
France
15
European Union countries
13
New York (State)
12
California
11
Germany
11
Australia
10
New York
10
Ontario
10
Soviet Union
10
Asia
9
Pennsylvania
8
Spain
8
Espana
7
Foreign countries
7
Italy
7
Los Angeles
7
New England
7
British Columbia
6
Ireland
6
Latin America
6
London
6
Oregon
6
Belgium
5
London (England)
5
Philippines
5
Southern States
5
Taiwan
5
Turkey
5
Ecuador
4
Israel
4
Lowell
4
Paris
4
Pittsburgh
4
Scotland
4
South Africa
4
Sweden
4
Arab countries
3
Argentina
3
Austria
3
more ...