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Subjects
Civil defense
4
Air raid warning
1
Biological weapon
1
Civil defense at factories
1
Civil defense exercise
1
Contamination area
1
Education of youth
1
Epidemic
1
First aid assistance
1
Gas mask
1
Imperialist aggression
1
Medical attention
1
Nuclear strike
1
Personal antichemical-protection gear
1
Protective clothing
1
Public information work
1
Radio warning
1
Search and rescue of the injured
1
Siren
1
Training
1