Subject Region
United States
88
Soviet Union
9
Developing countries
4
Bulgaria
3
Congo (Democratic Republic)
2
Cuba
2
Europe
2
Foreign countries
2
Germany
2
Iraq
2
Japan
2
Khyber Pakhtunkhwa (Pakistan)
2
Afghanistan
1
Amazon River Region
1
Australia
1
Baltimore (Md.)
1
Berlin (Germany)
1
China
1
Communist countries
1
Espionage, American
1
France
1
Germany (East)
1
Germany (West)
1
Islamic countries
1
Mexico
1
Pakistan
1
Russia (Federation)
1
Shanghai
1
Shanghai (China)
1
Uruguay
1
Vietnam
1