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  1. By: Summers, Sophia L M
    Type: Article
    In: The Annals and magazine of natural history; zoology, botany, and geology
    Volume: 10
    Series: 8
    Date: 1912
    Page Range: 222--228
    Publication Info: London Taylor and Francis, Ltd
  2. By: Summers, Sophia L M
    Type: Article
    In: The Annals and magazine of natural history; zoology, botany, and geology
    Volume: 8
    Series: 8
    Date: 1911
    Page Range: 235--240
    Publication Info: London Taylor and Francis, Ltd