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Subjects
Civil defense
42
Civil defense exercise
8
Imperialist aggression
6
Civil defense at factories
5
Contamination area
5
Engineering rescue services
5
Evacuation
5
Radiation detection
5
Antichemical-protection service
4
Civil defense obligations
4
Gas mask
4
Public information work
4
Search and rescue of the injured
4
Air defense
3
Air raid warning
3
Civil defense command
3
Decontamination
3
Decontamination of persons
3
Decontamination of technical equipment
3
Decontamination station
3