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Subjects
Nature
10
Hungary -- History -- 1956 -1962 -- Sources
7
Hungary -- History -- Revolution, 1956 -- Refugees
7
Politics
5
Wildlife
5
Folklore
4
Arts
3
Civil defense
3
Religion
3
Sciences
3
Air defense
2
Animation
2
Cosmology
2
Debates/Conferences
2
Evacuation
2
Evacuation planning
2
Legal issues
2
WWII
2
Warning
2
Air raid warning
1