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Subjects
Civil defense
3
Antichemical-protection service
2
Chemical decontamination
2
Personal antichemical-protection gear
2
Radiation detection
2
Chemical attack
1
Chemical reconnaissance
1
Contamination area
1
Engineering rescue services
1
Gas mask
1
Laboratory
1
Meteorological service
1
Mushroom cloud
1
Poison gases
1
Protective clothing
1
Radiation detectors
1
Reconnaissance unit
1