Subject Region
United States
180
Canada
24
China
21
Australia
17
Europe
15
Great Britain
15
Latin America
15
Mexico
15
Germany
13
India
13
Israel
11
Japan
9
Mexican-American Border Region
9
South Africa
9
Soviet Union
9
Spain
9
Asia
7
Ontario
7
Brazil
6
Western countries
6
Cuba
5
European Union countries
5
Persian Gulf States
5
America Latina
4
Central America
4
Developing countries
4
England
4
Florida
4
Hungary
4
Ireland
4
Jamaica
4
Kenya
4
West Bank
4
Africa
3
Chicago
3
Chicago (Ill.)
3
Colombia
3
Colorado
3
Ecuador
3
Espana
3
France
3
Germany (East)
3
Illinois
3
Pacific States
3
Pennsylvania
3
Philadelphia
3
Salvador
3
Salvador (Brazil)
3
Sudan
3
Syria
3
more ...