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  1. By: Goldstein, Michael I. - Woodbridge, Brian - Zaccagnini, María Elena - Canavelli, Sonia B.
    Type: Article
    In: The journal of raptor research
    Volume: 30
    Issue: 2
    Date: 1996
    Page Range: 106--107
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-
  2. By: Weyland, Federico - Zaccagnini, María Elena
    Type: Article
    In: Ecología austral
    Date: 2008-12-01
  3. By: Goijman, Andrea P. - Zaccagnini, María Elena
    Type: Article
    In: El hornero
    Date: 2008-12-01
  4. By: Canavelli, Sonia B. - Bechard, Marc J - Woodbridge, Brian - Kochert, Michael N. (Michael Nicholas) - Maceda, J J - Zaccagnini, María Elena
    Type: Article
    In: The journal of raptor research
    Volume: 37
    Issue: 2
    Date: 2003
    Page Range: 125--134
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-