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The Cycle of Celestial Objects Continued at the Hartwell Observatory to 1859
William Henry Smyth
其他書名
With a Notice of Recent Discoveries, Including Details from the Ædes Hartwellianæ
出版private circulation, 1860
URLhttp://books.google.com.hk/books?id=HdNMAQAAMAAJ&hl=&source=gbs_api
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