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  1. By: Jyrkkanen, Jorma A. - Wright, D. G.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 93
    Issue: 2
    Date: 1979
    Page Range: 199--200
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Jyrkkanen, Jorma A.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 89
    Issue: 1
    Date: 1975
    Page Range: 77--78
    Publication Info: Ottawa Ottawa Field-Naturalists' Club