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A biography of the Afro-American farmer and self-taught mathematician, astronomer, and surveyor for the new capital city of the United States in 1791, who also calculated a successful almanac notable for its preciseness.
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A biography of the Afro-American farmer and self-taught mathematician, astronomer, and surveyor for the new capital city of the United States in 1791, who also calculated a successful almanac notable for its preciseness.
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"A biography of the Afro-American farmer and self-taught mathematician, astronomer, and surveyor for the new capital city of the United States in 1791, who also calculated a successful almanac notable …"
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