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  1. By: Cirignoli, Sebastián - Podesta, D H - Pardiñas, Ulyses F. J.
    Type: Article
    In: The journal of raptor research
    Volume: 35
    Issue: 1
    Date: 2001
    Page Range: 68--69
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-