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  1. By: Wrigley, Robert E. - Dubois, John E. - Copeland, Herbert W. R.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 105
    Issue: 1
    Date: 1991
    Page Range: 1--12
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Wrigley, Robert E. - Dubois, John E.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 87
    Issue: 2
    Date: 1973
    Page Range: 167--169
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  3. By: Ultsch, Gordon Richard, - Dubois, John E. - Wicklow, Barry
    Type: Article
    In: The Canadian field-naturalist
    Volume: 121
    Issue: 2
    Date: 2007-04-01
    Page Range: 178--181
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  4. By: Dubois, John E. - Monson, Kimberly M.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 121
    Issue: 1
    Date: 2007-01-01
    Page Range: 57--61
    Publication Info: Ottawa Ottawa Field-Naturalists' Club