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By: Balph, Martha HatchType: ArticleIn: The Wilson bulletinVolume: 87Series:Issue: 2Date: 1975Page Range: 207--230Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-Subjects:
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By: Weitzman, Stanley H. - Balph, Martha HatchType: ArticleIn: Proceedings of the Biological Society of WashingtonVolume: 92Series:Issue:Date: 1980Page Range: 10--22Publication Info: Washington Biological Society of WashingtonSubjects: