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  1. By: Wong, P. B. Y. - Van Coeverden de Groot, P. - Fekken, C. - Smith, H - Pagès, M. - Boag, Peter T. (Peter Thomas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 125
    Issue: 2
    Date: 2011-04-01
    Page Range: 140--153
    Publication Info: Ottawa Ottawa Field-Naturalists' Club