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By: Gerrard, Jonathan M. - Harmata, A R - Gerrard, P. NaomiType: ArticleIn: The journal of raptor researchVolume: 26Series:Issue: 4Date: 1992Page Range: 229--234Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects:
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By: Harmata, A RType: ArticleIn: Raptor researchVolume: 16Series:Issue: 4Date: 1982Page Range: 103--109Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]Subjects: