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By: Platt, J BType: ArticleIn: The Canadian field-naturalistVolume: 90Series:Issue: 3Date: 1976Page Range: 338--345Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Platt, J BType: ArticleIn: Raptor researchVolume: 7Series:Issue: 2Date: 1973Page Range: 63--63Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]Subjects:
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By: Cade, Tom J. - Weaver, James D. - Platt, J B - Burnham, William A.,Type: ArticleIn: Raptor researchVolume: 11Series:Issue: 1-2Date: 1977Page Range: 28--48Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]Subjects:
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By: Platt, J BType: ArticleIn: The Great Basin naturalistVolume: 31Series:Issue:Date: 1971Page Range: 51--65Publication Info: Provo, Utah, M.L. Bean Life Science Museum, Brigham Young University,Subjects: