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Start Over Subjects African Continental Ancestry Group ✖Remove constraint Subjects: African Continental Ancestry Group Authors Abel, John Jacob, 1857-1938 ✖Remove constraint Authors: Abel, John Jacob, 1857-1938 Titles On the pigment of the Negro's skin and hair ✖Remove constraint Titles: On the pigment of the Negro's skin and hair

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  • On the pigment of the Negro's skin and hair1