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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Raim, Arlo J. - Cochran, William W. - Applegate, Roger D.
    Type: Article
    In: The journal of raptor research
    Volume: 23
    Issue: 2
    Date: 1989
    Page Range: 49--52
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-
  2. By: Applegate, Roger D. - Berger, Daniel D. - Cochran, William W. - Raim, Arlo J.
    Type: Article
    In: The journal of raptor research
    Volume: 21
    Issue: 2
    Date: 1987
    Page Range: 68--70
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-