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Subjects
Civil defense
51
Civil defense exercise
10
Evacuation
7
Contamination area
6
Engineering rescue services
6
Imperialist aggression
6
Antichemical-protection service
5
Civil defense at factories
5
Decontamination of food
5
Radiation detection
5
Search and rescue of the injured
5
Civil defense obligations
4
Decontamination
4
Evacuation planning
4
Gas mask
4
Public information work
4
Public shelter
4
Radio warning
4
Simulation
4
Traffic control
4