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By: Fernandez, Carmelo - Azkona, PType: ArticleIn: The journal of raptor researchVolume: 26Series:Issue: 4Date: 1992Page Range: 257--259Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects:
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By: Fernandez, Carmelo - Azkona, PType: ArticleIn: The journal of raptor researchVolume: 28Series:Issue: 1Date: 1994Page Range: 23--26Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects:
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By: Fernandez, Carmelo - Insausti, Jesús AType: ArticleIn: The journal of raptor researchVolume: 24Series:Issue: 4Date: 1990Page Range: 124--125Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects: