Geographic Subject
Argentina
4
Bolivia
1
Brazil
2
Chile
8
Colombia
18
Colombie
2
Costa Rica
26
Cuba
1
Dominican Republic
3
Ecuador
6
El Salvador
1
Great Britain
1
Haiti
1
India
5
Indonesia
2
Mexico
2
Mongolia
4
Nepal
1
Pakistan
3
Panama
1
Peru
1
Soviet Union
2
Tanzania
2
Thailand
2
United States
14
Unión Soviética
1
Venezuela
2
États-Unis
3