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  1. By: Graham, Robert,
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    BHL Collections: John Torrey Papers
  1. By: Graham, Robert,
    Type: Correspondence
    In: Asa Gray correspondence
    Date: 1840-01
    Publication Info: [1839-1890]
  2. By: Graham, Robert,
    Type: Article
    In: The Annals and magazine of natural history; zoology, botany, and geology
    Volume: 13
    Date: 1844
    Page Range: 105--109
    Publication Info: London Taylor and Francis, Ltd