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By: Dugoni, J A - Zwank, Phillip J., - Furman, Gary C.Type: ArticleIn: Raptor researchVolume: 20Series:Issue: 3-4Date: 1986Page Range: 124--127Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]Subjects:
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By: Harris, J O - Zwank, Phillip J., - Dugoni, J AType: ArticleIn: The journal of raptor researchVolume: 21Series:Issue: 1Date: 1987Page Range: 27--31Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects: