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  1. By: Franklin, Alan B - Ward, J. P.
    Type: Article
    In: The journal of raptor research
    Volume: 27
    Issue: 1
    Date: 1993
    Page Range: 55--55
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-
  2. By: Franklin, Alan B - Clark, Deborah A - Clark, David B
    Type: Article
    In: The Wilson bulletin
    Volume: 91
    Issue: 2
    Date: 1979
    Page Range: 202--221
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  3. By: Hunter, J E - Gutiérrez, Ralph J. - Franklin, Alan B - Olson, D
    Type: Article
    In: The journal of raptor research
    Volume: 28
    Issue: 4
    Date: 1994
    Page Range: 232--235
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-