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By: Ravenel, Mazyck PType: ArticleIn: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledgeVolume: 52Series:Issue: 209Date: 1913Page Range: 226--233Publication Info: Philadelphia, American Philosophical Society,Subjects:
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By: Ravenel, Mazyck PType: ArticleIn: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledgeVolume: 42Series:Issue: 173Date: 1903Page Range: 212--219Publication Info: Philadelphia, American Philosophical Society,Subjects: