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Subjects
Hungary -- History -- 1956 -1962 -- Sources
13
Hungary -- History -- Revolution, 1956 -- Refugees
13
Civil defense
4
Civil defense obligations
2
Escape route
2
Public shelter
2
Air defense
1
Construction of shelters
1
Contamination area
1
Hazardous area
1
Imperialist aggression
1
Improvised shelters
1
Nuclear bomb
1
Peace movement
1
Radiation hazard
1
Shelter furnishing
1
Traffic control
1
Transportation
1