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  1. By: Pitcher, Kenneth - McAllister, Dennis C.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 95
    Issue: 3
    Date: 1981
    Page Range: 292--297
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Raum-Suryan, Kimberly - Pitcher, Kenneth - Lamy, Richard
    Type: Article
    In: The Canadian field-naturalist
    Volume: 118
    Issue: 2
    Date: 2004-04-01
    Page Range: 270--272
    Publication Info: Ottawa Ottawa Field-Naturalists' Club