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  1. By: Proulx, Gilbert, - Proulx, Pauline - Groenewegen, James M. - Groenewegen, Lene
    Type: Article
    In: The Canadian field-naturalist
    Volume: 108
    Issue: 2
    Date: 1994
    Page Range: 229--229
    Publication Info: Ottawa Ottawa Field-Naturalists' Club