Subject Region
United States
179
Great Britain
127
England
52
New York (State)
23
France
16
New York
16
China
12
Massachusetts
10
Europe
7
Pennsylvania
7
Japan
6
London
6
Mexico
5
America
4
Canada
4
Africa
3
Denmark
3
Europe, Eastern
3
Germany
3
Iran
3
Philadelphia
3
Spain
3
Alton
2
Asia
2
Asia, Central
2
Baltimore
2
Boston
2
Burma
2
Europe, Central
2
Hong Kong
2
Hong Kong (China)
2
Illinois
2
Indonesia
2
Ireland
2
Kenya
2
London (England)
2
Maryland
2
Netherlands
2
Russia
2
Russia (Federation)
2
South Africa
2
Virginia
2
Africa, East
1
Alabama
1
America latina
1
Australia
1
Brazil
1
Chile
1
Cuba
1
Developing countries
1
more ...