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  1. By: Harling, J
    Type: Article
    In: The entomologist's record and journal of variation
    Volume: 80
    Date: 1968
    Page Range: 32--35
    Publication Info: [London s.n
  2. By: Harling, J - Snyder, J M - Coletti, D M
    Type: Article
    In: Journal of the Entomological Society of British Columbia
    Volume: 74
    Date: 1977
    Page Range: 34--36
    Publication Info: [Victoria, etc.] Entomological Society of British Columbia