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  1. Die Geschlechter-Vertheilung bei den Pflanzen.
    By: Hildebrand, Friedrich.
    Publication info: Leipzig :Wilhelm Engelmann,1867.
    Contributed by: Cambridge University Library
    BHL Collections: Charles Darwin's Library
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  2. Die Verbreitungsmittel der Pflanzen.
    By: Hildebrand, Friedrich.
    Publication info: Leipzig :Wilhelm Engelmann,1873.
    Contributed by: Cambridge University Library
    BHL Collections: Charles Darwin's Library
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  3. Die Verbreitungsmittel der Pflanzen. : [Supplementary material in Charles Darwin's copy].
    By: Darwin, Charles, - Hildebrand, Friedrich.
    Contributed by: Cambridge University Library
    BHL Collections: Charles Darwin's Library
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