The astronomical almanac for the year 1989 Data for astronomy, space sciences, geodesy, surveying, navigation and other applications

• Corporate Author: Her Majesty's Nautical Almanac Office, Royal Greenwich Observatory Nautical Almanac Office, United States Naval Observatory
• Format: Book
• Language: English
• Published: London Washington Her Majesty's Stationery Office U.S. Government Printing Office 1988
• Subjects: Handbook; Αστρονομία