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  1. By: Sheaffer, Susan E. - Malecki, Richard A. - Swift, Bryan L - Dunn, John - Scribner, Kim
    Type: Article
    In: The Canadian field-naturalist
    Volume: 121
    Issue: 3
    Date: 2007-07-01
    Page Range: 313--320
    Publication Info: Ottawa Ottawa Field-Naturalists' Club