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By: Bohm, Robert T.Type: ArticleIn: Raptor researchVolume: 11Series:Issue: 4Date: 1979Page Range: 97--99Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]Subjects:
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By: Bohm, Robert T.Type: ArticleIn: Raptor researchVolume: 14Series:Issue: 1Date: 1980Page Range: 1--6Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]Subjects:
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By: Bohm, Robert T.Type: ArticleIn: The journal of raptor researchVolume: 22Series:Issue: 1Date: 1988Page Range: 34--34Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects: