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  1. By: Blacker, N. C.
    Type: Article
    In: Journal of the Entomological Society of British Columbia
    Volume: 90
    Date: 1993
    Page Range: 84--84
    Publication Info: [Victoria, etc.], Entomological Society of British Columbia,
  2. By: Blacker, N. C.
    Type: Article
    In: The entomologist's record and journal of variation
    Volume: 102
    Date: 1990
    Page Range: 97--102
    Publication Info: [London s.n
  3. By: Blacker, N. C. - Collingwood, C. A.
    Type: Article
    In: British journal of entomology and natural history
    Volume: 15
    Issue: 1
    Date: 2002
    Page Range: 25--46
    Publication Info: [London] British Entomological and Natural History Society 1988-