United States (731)
Great Britain (156)
China (46)
Canada (34)
Europe (34)
Developing countries (24)
England (23)
Africa (21)
Germany (21)
California (19)
Southern States (17)
India (15)
Latin America (14)
France (13)
Africa, Sub-Saharan (12)
Japan (12)
South Africa (11)
Asia (10)
Australia (9)
New York (State) (9)
Singapore (8)
Brazil (7)
British Columbia (7)
East Asia (7)
Finland (7)
Israel (7)
Pennsylvania (7)
Malaysia (6)
New York (6)
New Zealand (6)
Tanzania (6)
Madagascar (5)
Mexico (5)
Netherlands (5)
Rome (5)
Russia (5)
Russia (Federation) (5)
South Asia (5)
Spain (5)
Alabama (4)
Arkansas (4)
Caribbean Area (4)
Cuba (4)
Egypt (4)
Georgia (4)
Hong Kong (4)
Ireland (4)
Italy (4)
Kentucky (4)
Los Angeles (4)
Middle East (4)
Ohio (4)
Soviet Union (4)
Texas (4)
Turkey (4)
Alaska (3)
Asia, Central (3)
Colombie-Britannique (3)
Cyprus (3)
Czech Republic (3)
Greece (3)
Illinois (3)
Little Rock (3)
Little Rock (Ark.) (3)
Massachusetts (3)
Mississippi (3)
New Jersey (3)
Oakland (3)
Palestine (3)
Philadelphia (3)
Scotland (3)
South Carolina (3)
Virginia (3)
West (U.S.) (3)
Wisconsin (3)
Afghanistan (2)
Algeria (2)
America (2)
Arab countries (2)
Arizona (2)
Atlanta (2)
Austria (2)
Berlin (2)
Cincinnati (2)
Congo (Democratic Republic) (2)
Connecticut (2)
Delaware (2)
Denmark (2)
Developed countries (2)
Ethiopia (2)
Germany (East) (2)
Germany (West) (2)
Hungary (2)
Indonesia (2)
Kansas (2)
Kenya (2)
Korea (2)
Korea (South) (2)
Lebanon (2)
Louisa County (2)