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  1. Botany for young people: Part 2, How plants behave.
    By: Gray, Asa.
    Publication info: New York & Chicago :Ivison, Blakeman, Taylor & Co.,1872.
    Contributed by: Cambridge University Library
    BHL Collections: Charles Darwin's Library
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  2. Botany for young people: Part 2, How plants behave. : [Supplementary material in Charles Darwin's copy].
    By: Darwin, Charles, - Gray, Asa.
    Contributed by: Cambridge University Library
    BHL Collections: Charles Darwin's Library
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  3. Manual of the botany of the northern United States.
    By: Gray, Asa.
    Edition: 2nd ed.
    Publication info: New York :[s.n.],1856.
    Contributed by: Cambridge University Library
    BHL Collections: Charles Darwin's Library
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  4. Manual of the botany of the northern United States. : [Supplementary material in Charles Darwin's copy].
    By: Darwin, Charles, - Gray, Asa.
    Contributed by: Cambridge University Library
    BHL Collections: Charles Darwin's Library
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