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  1. By: Wobeser, Gary - Leighton, F. A. - Osborne, A. D. - Nieman, J. - Smith, J R
    Type: Article
    In: The Canadian field-naturalist
    Volume: 96
    Issue: 3
    Date: 1982
    Page Range: 317--322
    Publication Info: Ottawa Ottawa Field-Naturalists' Club