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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Priestley, J. H. - Pearsall, W. H.
    Type: Article
    In: Annals of botany
    Volume: 36
    Date: 1922-04
    Page Range: 239--249
    Publication Info: London, Academic Press [etc.],
  2. By: Priestley, J. H. - Pearsall, W. H.
    Type: Article
    In: Annals of botany
    Volume: 36
    Date: 1922-10
    Page Range: 485--488
    Publication Info: London, Academic Press [etc.],
  3. By: Pearsall, W. H.
    Type: Article
    In: Annals of botany
    Volume: 37
    Date: 1923-04
    Page Range: 261--275
    Publication Info: London, Academic Press [etc.],