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  1. By: Kitchener, Andrew C - Herman, Jerry S - Reid, Robert J - Anderson, Neil.
    Type: Article
    In: The Glasgow naturalist
    Volume: 25
    Issue: 4
    Date: 2012
    Page Range: 142--147
    Publication Info: Glasgow Glasgow Natural History Society
  2. By: Goold, John C. - Whitehead, Hal P. - Reid, Robert J
    Type: Article
    In: The Canadian field-naturalist
    Volume: 116
    Issue: 3
    Date: 2002
    Page Range: 371--388
    Publication Info: Ottawa Ottawa Field-Naturalists' Club