Subject Region
United States
911
Great Britain
72
Europe
32
Canada
26
Asia
16
Africa
14
Germany
14
England
13
Australia
12
France
12
Latin America
12
India
11
New York (State)
11
Cambridge
10
China
10
Colombia
10
Ireland
9
Brazil
8
Illinois
8
Indonesia
8
Massachusetts
8
Netherlands
8
California
7
Indiana
7
Japan
7
North America
7
Soviet Union
7
Spain
7
Ontario
6
Pennsylvania
6
Czech Republic
5
Espana
5
Europe, Eastern
5
Italy
5
Mexico
5
New York
5
Oxford
5
Québec (Province)
5
Southern States
5
America
4
Austria
4
Black Mountain
4
Middle East
4
North Carolina
4
Pakistan
4
Saskatchewan
4
South Africa
4
Ukraine
4
Africa, West
3
Akron
3
more ...