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  1. By: Wobeser, Gary - Gajadhar, Alvin - Beyersbergen, Gerry W. - Sugden, Lawson G
    Type: Article
    In: The Canadian field-naturalist
    Volume: 95
    Issue: 4
    Date: 1981
    Page Range: 471--473
    Publication Info: Ottawa Ottawa Field-Naturalists' Club