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  1. By: Howarth, Brigitte - Gillett, Michael
    Type: Article
    In: ZooKeys
    Volume: 31
    Date: 2009
    Page Range: 119-132
    Publication Info: Sofia, Bulgaria Pensoft Publishers
  2. By: Howarth, Brigitte - Clee, Carl - Edmunds, Malcolm
    Type: Article
    In: British journal of entomology and natural history
    Volume: 13
    Date: 2000
    Page Range: 1--39
    Publication Info: [London] British Entomological and Natural History Society 1988-
  3. By: Gardner, Andrew G. - Howarth, Brigitte
    Type: Article
    In: BioRisk : biodiversity & ecosystem risk assessment
    Volume: 3
    Date: 2009
    Page Range: 27-38
    Publication Info: Sofia, Bulgaria Pensoft