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  1. By: Thiel, Richard P. - Hall, Wayne - Schultz, Ronald N.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 111
    Issue: 3
    Date: 1997
    Page Range: 481--482
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Heilhecker, Ellen - Thiel, Richard P. - Hall, Wayne
    Type: Article
    In: The Canadian field-naturalist
    Volume: 121
    Issue: 3
    Date: 2007-07-01
    Page Range: 256--260
    Publication Info: Ottawa Ottawa Field-Naturalists' Club