Astronomical phenomena for the year ...
By: prepared jointly by The Nautical Almanac Office, United States Naval Observatory and Her Majesty'sNautical Almanac Office, Royal Greenwich Observatory. 1991.
Contributors: Royal Greenwich Observatory. Nautical Almanac Office.; United States Naval Observatory. Nautical Almanac Office.
Publisher: U.S. Government Printing Office; HMSO
Published: 1989
Place of publication: Washington, D.C; London
Language: eng