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Subjects
Civil defense
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3
Air-raid service
1
Assembly area
1
Black-out services
1
Chemical attack
1
Chemical decontamination
1
Civil defense at factories
1
Civil defense command
1
Civil defense exercise
1
Danger zone
1
Engineering rescue services
1
Evacuation and refugee shelter services
1
Gas mask
1
Personal antichemical-protection gear
1
Poison gases
1
Protective clothing
1
Radio warning
1
Reconnaissance unit
1