Geographic Subject
Great Britain
17
United States
16
Germany
9
Latin America
5
Europe
4
Soviet Union
4
Japan
3
Kenya
3
New York (State)
3
Alabama
2
America
2
Amérique centrale
2
Asia
2
Austria
2
Berlin (Germany)
2
Canada
2
Cuba
2
Ghana
2
India
2
Lesotho
2
Malawi
2
Mediterranean Region
2
Mexico
2
Mexique
2
New York
2
Nicaragua
2
South America
2
Togoland (British)
2
Turkey
2
Tuskegee
2
États-Unis
2
Baltic States
1
Cameroon
1
Coast Province (Kenya)
1
Congo (Democratic Republic)
1
East Asia
1
Egypt
1
England
1
France
1
Gambia
1
Hispanoamérica
1
Mbandaka
1
Nigeria
1
Nyanza Province (Kenya)
1
Ouganda
1
Russia
1
Sierra Leone
1
Tennessee
1
Uganda
1
Vietnam
1
more ...