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  1. By: Goertzen, Leslie R.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 106
    Issue: 3
    Date: 1992
    Page Range: 420--420
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Goertzen, Leslie R.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 106
    Issue: 4
    Date: 1992
    Page Range: 552--552
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  3. By: Hansen, Curtis J. - Goertzen, Leslie R.
    Type: Article
    In: Opuscula philolichenum
    Volume: 11
    Date: 2012
    Page Range: 49--51
    Publication Info: Philadelphia J. Lendemer 2004-