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Subjects
Agriculture
25
Agriculture and state
7
Economic history
4
Globalization
4
Agricultural industries
3
Capitalism
3
Economic development
3
International economic relations
3
Nuclear energy
3
World War, 1939-1945
3
Environmental policy
2
Environmental protection
2
Equality
2
Income distribution
2
Land tenure
2
Pollution
2
War
2
Age distribution (Demography)
1
AgricultureAgriculture
1
Atomic bomb
1