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  1. By: Alexander, R. C., Dr.
    Type: Article
    In: The Annals and magazine of natural history; zoology, botany, and geology
    Volume: 17
    Date: 1846
    Page Range: 457--466
    Publication Info: London Taylor and Francis, Ltd
  2. By: Alexander, R. C., Dr.
    Type: Article
    In: The Annals and magazine of natural history; zoology, botany, and geology
    Volume: 18
    Date: 1846
    Page Range: 94--102
    Publication Info: London Taylor and Francis, Ltd