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Subjects
Civil defense
3
History
2
Agriculture
1
Air raid warning
1
Biography
1
Civil defense exercise
1
Decontamination of animals
1
Decontamination of food
1
Decontamination of water
1
Economy
1
Education
1
Family
1
Fire prevention
1
Firefighters
1
Firestorm
1
First aid assistance
1
Gas torch
1
Great October Socialist Revolution
1
Ideology
1
Laboratory
1