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  1. By: Treub, Melchior,
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1888-12-25
    Publication Info: [1830-1898]
  2. By: Treub, Melchior,
    Type: Article
    In: The Annals and magazine of natural history; zoology, botany, and geology
    Volume: 3
    Series: 6
    Date: 1889
    Page Range: 141--149
    Publication Info: London,Taylor and Francis, Ltd.