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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Hamilton, K L
    Type: Article
    In: Raptor research
    Volume: 19
    Issue: 4
    Date: 1985
    Page Range: 122--124
    Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]
  2. By: Hamilton, K L
    Type: Article
    In: Raptor research
    Volume: 14
    Issue: 2
    Date: 1980
    Page Range: 52--55
    Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]