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By: Galeotti, Paolo - Sacchi, Roberto - Perani, EType: ArticleIn: The journal of raptor researchVolume: 31Series:Issue: 4Date: 1997Page Range: 353--357Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects:
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By: Galeotti, Paolo - Canova, Luca,Type: ArticleIn: The journal of raptor researchVolume: 28Series:Issue: 4Date: 1994Page Range: 265--268Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects: