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By: Manosa, S - Mateos, E - Pedrocchi, VType: ArticleIn: The journal of raptor researchVolume: 37Series:Issue: 1Date: 2003Page Range: 19--30Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects:
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By: Manosa, S - Pedrocchi, VType: ArticleIn: The journal of raptor researchVolume: 31Series:Issue: 3Date: 1997Page Range: 203--207Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects: