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  1. By: Robertson, T S
    Type: Article
    In: British journal of entomology and natural history
    Volume: 8
    Date: 1995
    Page Range: 97--100
    Publication Info: [London], British Entomological and Natural History Society, 1988-
  2. By: Barrington, Rupert D G - Robertson, T S - Walker, Don
    Type: Article
    In: British journal of entomology and natural history
    Volume: 10
    Date: 1997
    Page Range: 62--64
    Publication Info: [London], British Entomological and Natural History Society, 1988-