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By: Sachse, Julius FType: ArticleIn: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledgeVolume: 35Series:Issue: 151Date: 1896Page Range: 119--122Publication Info: Philadelphia, American Philosophical Society,Subjects:
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By: Sachse, Julius FType: ArticleIn: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledgeVolume: 37Series:Issue: 157Date: 1898Page Range: 45--51Publication Info: Philadelphia, American Philosophical Society,Subjects: