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Start Over Collections Medicine in the Americas, 1610-1920 ✖Remove constraint Collections: Medicine in the Americas, 1610-1920 Subjects Population Forecast ✖Remove constraint Subjects: Population Forecast Titles The vital equation of the colored race and its future in the United States ✖Remove constraint Titles: The vital equation of the colored race and its future in the United States

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  • The vital equation of the colored race and its future in the United States1