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  1. 5. On a Freshwater Medusa from the Limpopo River System, with a Note on a Parasitic Infusorian
    By: Arnold, G - Boulenger, C L
    Type: Article
    In: Proceedings of the Zoological Society of London.
    Volume: 1915
    Date: 1915
    Page Range: 71--76
    Publication info: London :Academic Press, [etc.],1833-1965.
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  2. Sphecidae and Pompilidae (Hymenoptera) collected by Mr. K. M. Guichard in West Africa and Ethiopia, 1941-1948
    By: Arnold, G
    Type: Article
    In: Bulletin of the British Museum (Natural History).
    Volume: 2
    Date: 1951
    Page Range: 95--183
    Publication info: London :The Museum,1950-1977.
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