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Subjects
Civil defense
3
Radio warning
[remove]
3
Air raid warning
1
Air-raid service
1
Black-out services
1
Civil defense at factories
1
Civil defense command
1
Evacuation and refugee shelter services
1
Food storage
1
Improvised shelters
1
Public information work
1
Reception center for evacuees
1
Siren
1
Training
1
Training coordination
1
Water supply
1