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Subjects
Agriculture
1
Animal and plant protection reconnaissance
1
Civil defense
2
Civil defense at factories
1
Communists
1
Decontamination of food
1
Decontamination of land
1
Food storage
1
Mobilization
1
Political prisoners
1
Prevention
1
Public information work
1
Rapid harvest
1
Signal flag
1
Socialists
1
War production plants
1