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By: Niemi, G J - Hanowski, J MType: ArticleIn: The journal of raptor researchVolume: 31Series:Issue: 2Date: 1997Page Range: 191--196Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects:
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By: Niemi, G J - Hanowski, J MType: ArticleIn: The journal of raptor researchVolume: 31Series:Issue: 2Date: 1997Page Range: 93--94Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects: