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Subjects
Civil defense
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37
Civil defense exercise
9
Civil defense at factories
6
Evacuation
6
Contamination area
5
Engineering rescue services
5
Simulation
5
Antichemical-protection service
4
Civil defense command
4
Civil defense obligations
4
Public information work
4
Radiation detection
4
Decontamination of food
3
Evacuation planning
3
Food storage
3
Imperialist aggression
3
NBC (nuclear, biological, chemical) special services
3
Radio warning
3
Traffic control
3
War production plants
3