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Subjects
Civil defense
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4
Radiation detection
3
Antichemical-protection service
2
Chemical decontamination
2
Personal antichemical-protection gear
2
Biological warfare
1
Chemical attack
1
Chemical reconnaissance
1
Contamination area
1
Decontamination of personal clothing
1
Decontamination of technical equipment
1
Decontamination station
1
Engineering rescue services
1
Gas mask
1
Laboratory
1
Meteorological service
1
Mushroom cloud
1
Nuclear contamination
1
Poison gases
1
Protective clothing
1