ระบบพิกัดสุริยวิถี (Thai Wikipedia)

Analysis of information sources in references of the Wikipedia article "ระบบพิกัดสุริยวิถี" in Thai language version.

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archive.org

Nautical Almanac Office, U.S. Naval Observatory; H.M. Nautical Almanac Office, Royal Greenwich Observatory (1961). Explanatory Supplement to the Astronomical Ephemeris and the American Ephemeris and Nautical Almanac. H.M. Stationery Office, London (reprint 1974). pp. 24–27.

books.google.com

U.S. Naval Observatory, Nautical Almanac Office (1992). P. Kenneth Seidelmann (บ.ก.). Explanatory Supplement to the Astronomical Almanac. University Science Books, Mill Valley, CA (reprint 2005). pp. 11–13. ISBN 1-891389-45-9.