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By: Toland, Brian R.Type: ArticleIn: Raptor researchVolume: 18Series:Issue: 3Date: 1984Page Range: 107--110Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]Subjects:
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By: Toland, Brian R.Type: ArticleIn: Raptor researchVolume: 19Series:Issue: 4Date: 1985Page Range: 146--148Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]Subjects:
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By: Toland, Brian R.Type: ArticleIn: The Wilson bulletinVolume: 98Series:Issue: 1Date: 1986Page Range: 116--125Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-Subjects:
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By: Toland, Brian R.Type: ArticleIn: The journal of raptor researchVolume: 21Series:Issue: 1Date: 1987Page Range: 14--20Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects: