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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Ridler, W. F. F.
    Type: Article
    In: Annals of botany
    Volume: 36
    Date: 1922-04
    Page Range: 193--207
    Publication Info: London, Academic Press [etc.],
  2. By: Ridler, W. F. F.
    Type: Article
    In: Annals of botany
    Volume: 37
    Date: 1923-07
    Page Range: 483--487
    Publication Info: London, Academic Press [etc.],