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Subjects
Hungary
9
Opposition (Political science)
9
Political science
9
Political culture
4
Military art and science
3
Civil defense
2
Science
2
Archaeology
1
Baikal-Amur Mainline
1
Bibliography
1
Biological weapon
1
Biology
1
Communism
1
Cosmology
1
Democracy
1
Elections
1
Epidemic
1
Europe, Eastern
1
Gas mask
1
Geology
1