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By: Vander Wall, Stephen B. - Longland, William SType: ArticleIn: The Great Basin naturalistVolume: 59Series:Issue: 3Date: 1999Page Range: 278--280Publication Info: Provo, Utah, M.L. Bean Life Science Museum, Brigham Young University,Subjects:
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By: Vander Wall, Stephen B. - Hutchins, Harry EType: ArticleIn: The Canadian field-naturalistVolume: 97Series:Issue: 2Date: 1983Page Range: 208--214Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Cheney, C D - Vander Wall, Stephen B. - Poehlmann, R JType: ArticleIn: The journal of raptor researchVolume: 21Series:Issue: 3Date: 1987Page Range: 103--110Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects: