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By: Ruschenberger, W S WType: ArticleIn: Proceedings of the Academy of Natural Sciences of PhiladelphiaVolume: 34Series:Issue:Date: 1882Page Range: 226--230Publication Info: Philadelphia, Academy of Natural Sciences of Philadelphia,Subjects:
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By: Ruschenberger, W S WType: ArticleIn: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledgeVolume: 21Series:Issue: 115Date: 1884Page Range: 427--447Publication Info: Philadelphia, American Philosophical Society,Subjects:
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By: Ruschenberger, W S WType: ArticleIn: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledgeVolume: 23Series:Issue: 121Date: 1886Page Range: 104--146Publication Info: Philadelphia, American Philosophical Society,Subjects:
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By: Ruschenberger, W S WType: ArticleIn: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledgeVolume: 29Series:Issue: 135Date: 1891Page Range: 60--78Publication Info: Philadelphia, American Philosophical Society,Subjects:
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By: Ruschenberger, W S WType: ArticleIn: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledgeVolume: 30Series:Issue: 138Date: 1892Page Range: 135--184Publication Info: Philadelphia, American Philosophical Society,Subjects:
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By: Ruschenberger, W S WType: ArticleIn: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledgeVolume: 31Series:Issue: 142Date: 1893Page Range: 254--257Publication Info: Philadelphia, American Philosophical Society,Subjects: