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Subjects
Epidemic
2
First World War
2
First aid assistance
2
Improvised shelters
2
Mobilization
2
NBC (nuclear, biological, chemical) special services
2
Personal antichemical-protection gear
2
Poison gases
2
Prevention
2
Radioactive dust
2
Reception center for evacuees
2
Reception of evacuees
2
Second World War
2
Switch to war production
2
Training coordination
2
Transportation
2
Vietnam war
2
Agriculture
1
Air defense
1
Air-raid service
1