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Report of the Astronomer Royal to the Board of Visitors of the Royal Observatory, Greenwich
Royal Greenwich Observatory
其他書名
Read at the Annual Visitation of the Royal Observatory, 1874, June 6
出版Royal Observatory, 1874
URLhttp://books.google.com.hk/books?id=H-_KoVkly74C&hl=&source=gbs_api
EBookFULL_PUBLIC_DOMAIN