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Reports on Observations of the Total Eclipse of the Sun, August 7, 1869
United States Naval Observatory
其他書名
Conducted Under the Direction of Commodore B.F. Sands, U.S.N., Superintendent
出版U.S. Government Printing Office, 1869
URLhttp://books.google.com.hk/books?id=IzZRAAAAYAAJ&hl=&source=gbs_api
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