Geography
United States
12 results
Soviet Union
6 results
Nicaragua
4 results
Africa, North
3 results
Middle East
3 results
China
2 results
Cuba
2 results
Czechoslovakia
2 results
East Asia
2 results
Europe, Eastern
2 results
Afghanistan
1 results
Developing countries
1 results
Egypt
1 results
Ethiopia
1 results
Europe
1 results
Europe, Central
1 results
Former Soviet republics
1 results
Ireland
1 results
Monroe
1 results
North Carolina
1 results
Northern Ireland
1 results
Romania
1 results
Russia
1 results
Southeast Asia
1 results
Southern States
1 results
Tibet Autonomous Region
1 results
Tibet Autonomous Region (China)
1 results
Yugoslavia
1 results