TY  - BOOK
ED  - United States. Government Printing Office
TI  - The astronomical almanac for the year 1989
SN  - 0-11-886932-9
PY  - 1988///
CY  - Washington
PB  - U. S. Government Printing Office
KW  - Almanacs
KW  - Astronomy and Astrophysics Thesaurus
KW  - Ephemerides
ER  -