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Subject
- Labor economics2,510
- Labor749
- Labor unions503
- Employment249
- Pensions218
- Wages197
- Labor laws and legislation194
- Discrimination136
- Strikes and lockouts130
- Retirees126
- Occupational training112
- Education95
- Social movements87
- World War, 1939-194583
- Child labor71
- Civil rights61
- Work environment55
- Child care54
- Unemployed39
- Prisons31