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By: Hakkarainen, Harri - Korpimaki, E - Koivunen, Vesa - Kurki, SamiType: ArticleIn: The journal of raptor researchVolume: 31Series:Issue: 2Date: 1997Page Range: 125--128Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects:
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By: Korpimaki, EType: ArticleIn: Raptor researchVolume: 18Series:Issue: 3Date: 1984Page Range: 113--115Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]Subjects:
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By: Tomé, Ricardo - Bloise, Carolina. - Korpimaki, EType: ArticleIn: The journal of raptor researchVolume: 38Series:Issue: 1Date: 2004Page Range: 35--46Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects: