Subject Region
United States
217
England
67
Great Britain
33
Developing countries
21
Australia
16
Africa, Sub-Saharan
13
China
10
Europe
10
North America
10
Canada
9
France
8
Spain
8
Washington (D.C.)
8
Southern States
7
Africa
6
India
6
Colombia
5
Egypt
5
Hong Kong (China)
5
Alabama
4
America
4
California
4
Caribbean Area
4
Cuba
4
Germany
4
Hawaii
4
Kenya
4
London
4
Macon County
4
Mexico
4
Middle East
4
Nigeria
4
Pennsylvania
4
Washington (State)
4
Asia
3
Canada, Western
3
Canal Zone
3
Ecuador
3
Espana
3
Greece
3
Japan
3
Latin America
3
Los Angeles
3
Louisiana
3
Manitoba
3
Massachusetts
3
Netherlands
3
New England
3
Papua New Guinea
3
Saudi Arabia
3
more ...