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By: Williamson, A. A.Type: ArticleIn: Journal of the Washington Academy of SciencesVolume: 43Series:Issue:Date: 1953Page Range: 305--311Publication Info: Washington [etc Washington Academy of Sciences]Subjects:
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By: Williamson, A. A.Type: ArticleIn: Journal of the Washington Academy of SciencesVolume: 44Series:Issue:Date: 1954Page Range: 297--302Publication Info: Washington [etc Washington Academy of Sciences]Subjects: