Region
Africa, Sub-Saharan
1
Cambodia
1
China
1
Cuba
1
Czechoslovakia
1
England
3
Ethiopia
1
Europe
16
Europe, Eastern
4
France
1
Germany
25
Iraq
1
Italy
7
Labor disputes
1
London
2
London (England)
4
Paraguay
1
Russia
1
Russia (Federation)
2
Science fiction
1
Soviet Union
23
Spain
1
Totalitarism
1
United States
18