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  1. On the fauna of Nowaja-Semlja
    By: Ehlers
    Type: Article
    In: Annals And Magazine of Natural History
    Volume: 11
    Series: 4
    Date: 1873
    Page Range: 464--465
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  2. VII.—On the vermes collected by M. von Heuglin in the sea of Spitzbergen
    By: Ehlers
    Type: Article
    In: Annals And Magazine of Natural History
    Volume: 8
    Series: 4
    Date: 1871
    Page Range: 53--61
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