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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Carpenter, Thomas W. - Carpenter, Arthur L.
    Type: Article
    In: The journal of raptor research
    Volume: 21
    Issue: 4
    Date: 1987
    Page Range: 160--160
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-
  2. By: Carpenter, Thomas W. - Carpenter, Arthur L.
    Type: Article
    In: The journal of raptor research
    Volume: 22
    Issue: 2
    Date: 1988
    Page Range: 72--72
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-