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Subjects
Hungary -- History -- Revolution, 1956 -- Refugees
8
Physics
6
Hungary -- History -- 1956 -1962 -- Sources
5
National socialism
4
Nuclear physics
4
Cosmology
3
Hungary -- Emigration and immigration -- Interviews
3
Hungary -- History -- 1945-1989 -- Sources
3
Science
3
Archives
2
Collective memory
2
Cultural property
2
Geology
2
IT
2
Metallurgy
2
Physical education
2
Sports
2
Amateur recording
1
Art and science
1
Artificial intelligence
1