Subject Region
United States
148
California
19
Michigan
13
Ann Arbor
7
Great Britain
6
Easton (Northampton County)
5
Pennsylvania
5
China
2
England
2
New York
2
New York (State)
2
Palo Alto
2
Princeton (N.J.)
2
South Africa
2
Alabama
1
Atlantic States
1
Berkeley
1
Florida
1
Kenya
1
Korea (South)
1
Massachusetts
1
Ohio
1
Texas
1
Washington (State)
1