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91
Economic history
26
Politics and government
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Social conditions
21
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16
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16
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11
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11
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10
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8
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7
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6
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6
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5
Communism
5
Labor
5
World War, 1939-1945
5
Descriptions et voyages
4
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4
Labor and laboring classes
4
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4
New Deal, 1933-1939
4
Politique et gouvernement
4
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4
Unemployed
4
Commerce
3
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3
Immigrants
3
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3
Nineteen twenties
3
Personal narratives
3
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3
World War, 1914-1918
3
1918-1945
2
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2
Aufsatzsammlung
2
British
2
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2
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2
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2
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2
Financial crises
2
Food supply
2
Germans
2
Gold
2
Histoire
2
Income
2
International relations
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Italians
2
Landeskunde
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