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By: Zabel, Cynthia J., - Sakai, H. F. - Waters, J. R.Type: ArticleIn: The journal of raptor researchVolume: 27Series:Issue: 1Date: 1993Page Range: 58--59Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects:
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By: Forsman, Eric D - Anthony, Robert G. - Meslow, E C - Zabel, Cynthia J.,Type: ArticleIn: The journal of raptor researchVolume: 38Series:Issue: 3Date: 2004Page Range: 214--230Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects: