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Subjects
Decontamination of food
1
Decontamination of water
1
Dialectical materialism
1
Economic planning
1
Economics
1
Economy
1
Education
1
Environment protection
1
Family
1
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1
Fire prevention
1
Firefighters
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Firestorm
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Five-year plan
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Gas torch
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Geography
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Great October Socialist Revolution
1
Hungarian fiction
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Hungarian language
1