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  1. By: Gess, F W
    Type: Article
    In: Journal of Hymenoptera research
    Volume: 21
    Date: 2011
    Page Range: 1-39
    Publication Info: Washington, D.C International Society of Hymenopterists
    Subjects: floral associations  Southern Africa  taxonomy
  2. By: Gess, F W
    Type: Article
    In: Journal of Hymenoptera research
    Volume: 24
    Date: 2012
    Page Range: 95-115
    Publication Info: Washington, D.C International Society of Hymenopterists
    Subjects: floral associations  Southern Africa  taxonomy
  3. By: Gess, F W
    Type: Article
    In: Journal of Hymenoptera research
    Volume: 25
    Date: 2012
    Page Range: 83-92
    Publication Info: Washington, D.C International Society of Hymenopterists
    Subjects: floral associations  Southern Africa  taxonomy