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By: Krone, OType: ArticleIn: The journal of raptor researchVolume: 36Series:Issue: 1Date: 2002Page Range: 84--86Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects:
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By: Krone, O - Scharnweber, ChristianType: ArticleIn: The journal of raptor researchVolume: 37Series:Issue: 2Date: 2003Page Range: 174--176Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects: