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Subjects
Civil defense
7
Radiation detection
3
Antichemical-protection service
2
Chemical decontamination
2
Personal antichemical-protection gear
2
Air raid
1
Air-raid service
1
Arms race
1
Biological warfare
1
Black-out services
1
Chemical attack
1
Chemical reconnaissance
1
Civil defense at factories
1
Civil defense command
1
Civil defense exercise
1
Civil defense reconnaissance
1
Contamination area
1
Damage zones
1
Decontamination of personal clothing
1
Decontamination of technical equipment
1