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  1. By: Godfrey, Ralph D., Jr. - Fedynich, Alan M.
    Type: Article
    In: The journal of raptor research
    Volume: 22
    Issue: 2
    Date: 1988
    Page Range: 65--65
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-
  2. By: Godfrey, Ralph D., Jr. - Fedynich, Alan M.
    Type: Article
    In: The journal of raptor research
    Volume: 21
    Issue: 2
    Date: 1987
    Page Range: 72--73
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-