00543nam a2200169Ia 4500003000900000008004100009020001700050040001600067080001900083110004600102245010900148260005500257300002300312650001300335650001600348650000900364IN-BaIIA211028s9999    xx            000 0 eng d  a011 886934 5  cIIA Library  a059:52bAAL-90  aUnited States. Government Printing Office 4aThe astronomical Almanac for the year 1990cU S Government Printing Office                                aWashingtonbU. S. Government Printing Officec1989  a[various pagings.]  aAlmanacs  aEphemerides  aNASA