Cover of Photo-heliographic results 1874 to 1885 being supplementary results from photographs of the sun taken at Greenwich, at Harvard college, U.S.A., at Melbourne, in India, and in Mauritius in the years 1874 to 1885
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Photo-heliographic results 1874 to 1885 being supplementary results from photographs of the sun taken at Greenwich, at Harvard college, U.S.A., at Melbourne, in India, and in Mauritius in the years 1874 to 1885

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321 pages 1907

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