Geographic Subject
United States
20
Germany
3
Asia
2
Nicaragua
2
Soviet Union
2
États-Unis
2
Argentina
1
Asie
1
Baltic States
1
Belgium
1
Bolivia
1
Brazil
1
Chile
1
China
1
Czechoslovakia
1
Denmark
1
Dominican Republic
1
Ethiopia
1
Guatemala
1
Honduras
1
Iraq
1
Italy
1
Japan
1
Lithuania
1
Louisiana
1
Louisiane
1
Panama
1
Philippines
1
Romania
1
Yugoslavia
1