Astronomical Almanac for the Year 1993
1983
Rand McNally, United States Naval Observatory, United States Nautical Almanac Office, 8054001408, 8050001416, 0854001530, 008-054-00176-9, United States Naval Observatory Nautical Almanac Office, Rutherford Appleton Laboratory, Engl Her Majesty's Nautical Almanac Office, Nautical Almanac Office (U S ), Nautical Almanac Office (U S ), Nautical Almanac Office (U.S.), Government Publications Office, Government Publishing Office