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  1. By: Sharp, Mirek J. - Britton, Donald M.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 105
    Issue: 2
    Date: 1991
    Page Range: 283--285
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Sharp, Mirek J. - Campbell, Craig A.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 96
    Issue: 2
    Date: 1982
    Page Range: 208--209
    Publication Info: Ottawa Ottawa Field-Naturalists' Club