Vols. for 1981-198 issued by: the Nautical Almanac Office, United States Naval Observatory, and: Her Majesty's Nautical Almanac Office (1981 by order of the Science Research Council; 1982 on behalf of the Science Research Council; 1983- on behalf of the Science and Engineering Research Council).
Linking Entry
Merger of: American ephemeris and nautical almanac; and, Astronomical ephemeris for the year ...