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Subjects
Civil defense
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4
Antichemical-protection service
1
Arms race
1
Civil defense command
1
Civil defense exercise
1
Damage zones
1
Electromagnetic radiation
1
Engineering rescue services
1
Imperialist aggression
1
Mushroom cloud
1
NBC (nuclear, biological, chemical) special services
1
Nuclear weapon
1
Peace movement
1
Radiation level
1
Radio warning
1
Shock wave
1
Signal operator
1
Simulation
1
Underground nuclear explosion
1