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Results of Measures Made at the Royal Observatory, Greenwich, Under the Direction of W.H.M. Christie ... Astronomer Royal, of Photographs of the Sun Taken at Greenwich, in India, and in Mauritius in the Year 1901-1955

Results of Measures Made at the Royal Observatory, Greenwich, Under the Direction of W.H.M. Christie ... Astronomer Royal, of Photographs of the Sun Taken at Greenwich, in India, and in Mauritius in the Year 1901-1955

Royal Greenwich Observatory — 1909

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