Subject Region
United States
182
France
46
Germany
44
Great Britain
41
China
29
Europe
20
India
19
Italy
18
Mexico
18
Soviet Union
18
England
13
Argentina
12
Latin America
11
Spain
9
Rome
8
South Asia
8
Australia
7
Austria
7
Iran
7
Taiwan
7
Africa
6
Canada
6
Philippines
6
Scotland
6
Europe, Eastern
5
Greece
5
Hungary
5
Ireland
5
Middle East
5
Cuba
4
Czechoslovakia
4
Egypt
4
Indonesia
4
Israel
4
Japan
4
Paris
4
Appalachian Region, Southern
3
Bahia (Brazil : State)
3
Bahia (State)
3
Berlin
3
Brazil
3
Czech Republic
3
European Union countries
3
Germany (East)
3
Germany (West)
3
Johnson City
3
Kazakhstan
3
Korea (South)
3
Kyrgyzstan
3
Mexico City
3
more ...