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  1. By: MacCrimmon, Hugh R. - Pugsley, Robert W.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 93
    Issue: 3
    Date: 1979
    Page Range: 266--271
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: MacCrimmon, Hugh R. - Pugsley, Robert W. - Gots, Barra L
    Type: Article
    In: The Canadian field-naturalist
    Volume: 97
    Issue: 2
    Date: 1983
    Page Range: 161--169
    Publication Info: Ottawa Ottawa Field-Naturalists' Club