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Labor
12
Transportation
12
Colonies
11
Tariff
11
Unemployed
11
Cotton growing
10
Foreign relations
10
Industrial policy
10
Jews
10
Societies, etc
10
Bibliography
9
Education
9
Ethnic relations
9
Mexicans
9
Women
9
World War, 1914-1918
9
Case studies
8
Chinese Americans
8
Commercial policy
8
Émigration et immigration
8
Government publications
8
Italian Americans
8
Labor unions
8
Land tenure
8
Polish Americans
8
Wages
8
Wealth
8
Wirtschaft
8
Congresses
7
Frontier and pioneer life
7
Industry
7
Italians
7
Manners and customs
7
Migration, Internal
7
Business enterprises
6
Cities and towns
6
City planning
6
Discrimination in employment
6
Entrepreneurship
6
Government policy
6
Japanese Americans
6
Labor movement
6
Labor supply
6
Merchants
6
Mines and mineral resources
6
Philadelphia (Pa.)
6
Plantation life
6
Poor
6
Puerto Ricans
6
Refugees
6
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