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illegal immigrants (1)
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illness (5)
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immigrants (3)
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immigration (2)
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immunization (6)
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income (79)
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income distribution (13)
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industrial indicators (1)
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industries (1)
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industry (56)
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infant mortality (1)
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influence (1)
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information dissemination (1)
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information sources (1)
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insurance coverage (3)
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interest (finance) (1)
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Internet (7)
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internet (1)
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interpersonal communication (1)
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investments (5)
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investors (1)
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Iraq War (1)
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Irish Americans (1)