Subject Region
United States
25
California
6
Canada
3
France
2
India
2
Los Angeles
2
Arizona
1
Australia
1
Cambridge
1
Chico
1
Developing countries
1
Espana
1
European Union countries
1
Germany
1
Great Britain
1
Houston
1
Latin America
1
Massachusetts
1
Mill Valley
1
Missouri
1
New York (State)
1
New Zealand
1
North Carolina
1
Ohio
1
Ontario
1
Pennsylvania
1
Philadelphia
1
Phoenix
1
Portland Metropolitan Area (Or.)
1
Rochester
1
Saint Louis
1
San Francisco Bay Area
1
Santa Ana
1
Saudi Arabia
1
Spain
1
Texas
1
Toronto
1
Washington Metropolitan Area
1
Zulia (Venezuela)
1