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By: Malan, GType: ArticleIn: The journal of raptor researchVolume: 32Series:Issue: 3Date: 1998Page Range: 195--201Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects:
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By: Malan, G - Shultz, SType: ArticleIn: The journal of raptor researchVolume: 36Series:Issue: 4Date: 2002Page Range: 300--308Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects: