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Subjects
Human rights
8
International cooperation
8
Science
5
Astronautics
4
Communication
3
Hungary -- History -- 1956 -1962 -- Sources
3
Hungary -- History -- Revolution, 1956 -- Refugees
3
Peace
3
World politics
3
Communication policy
2
Communism
2
Economic assistance
2
Freedom of information
2
International Cooperation
2
International relations
2
Postal service
2
Refugees
2
Science and state
2
Security, International
2
Technical assistance
2