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  1. By: Jackson, Jerome A - Dakin, O H
    Type: Article
    In: Raptor research
    Volume: 16
    Issue: 2
    Date: 1982
    Page Range: 60--61
    Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]
  2. By: Jackson, Jerome A - Schardien, Bette J. - Dakin, O H - Kulesza, George C.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 96
    Issue: 3
    Date: 1982
    Page Range: 355--357
    Publication Info: Ottawa Ottawa Field-Naturalists' Club