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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Billiard, G.
    Type: Article
    In: Bulletin de la Société botanique de France
    Volume: 53
    Date: 1906
    Page Range: 526--527
    Publication Info: Paris, La Société, 1854-1978
  2. By: Billiard, G.
    Type: Article
    In: Bulletin de la Société botanique de France
    Volume: 56
    Date: 1909
    Page Range: 328--332
    Publication Info: Paris, La Société, 1854-1978