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  1. By: Gehring, Thomas M.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 107
    Issue: 3
    Date: 1993
    Page Range: 373--374
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Lovallo, Matthew J. - Gilbert, Jonathan H. - Gehring, Thomas M.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 107
    Issue: 1
    Date: 1993
    Page Range: 108--109
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  3. By: Shelley, Douglas P. - Gehring, Thomas M.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 116
    Issue: 4
    Date: 2002
    Page Range: 648--650
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  4. By: Gehring, Thomas M. - Kohn, Bruce Erick - Gehring, Joelle L. - Anderson, Eric M
    Type: Article
    In: The Canadian field-naturalist
    Volume: 117
    Issue: 3
    Date: 2003-07-01
    Page Range: 419--423
    Publication Info: Ottawa Ottawa Field-Naturalists' Club