Subject Region
United States
218
Great Britain
122
China
27
England
25
California
23
Mexico
21
Pennsylvania
19
Germany
15
New Hampshire
13
Texas
13
Hanover
12
Canada
11
Easton (Northampton County)
11
South Africa
11
France
10
Massachusetts
10
New York (State)
10
New York
9
Berkeley
8
Cambridge
8
India
8
Japan
8
Scotland
8
Connecticut
7
Marlborough
7
Ohio
7
Virginia
7
Oxford
6
Australia
5
Developing countries
5
New Haven
5
Ontario
5
Paris
5
Québec (Province)
5
Spain
5
Blacksburg
4
Germany (West)
4
Illinois
4
Indiana
4
Italy
4
Mexico City
4
New Jersey
4
Paris (France)
4
Washington (D.C.)
4
Austria
3
Bloomington
3
Colombia
3
Colorado
3
Easton
3
Edinburgh (Scotland)
3
more ...