1.

図書
図書
1. First Cape catalogue of stars for the equinox 1925.0 : Catalogue of 4569 stars from observations with the reversible transit circle made at the Royal observatory, Cape of Good Hope, during the years 1918-1925
under the direction of H. Spencer Jones
出版情報: London : H. M. Stationery Off., 1928
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2.

図書
図書
2. Proper motions of stars in the zone catalogue of 20,843 stars 1900 : zones -40° to -50° derived from photographs taken at the Royal Observatory, Cape of Good Hope
under the directions of H. Spencer Jones and J. Jackson
出版情報: London : H.M.S.O., 1936
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