00434nam a2200145Ia 4500003000900000008004100009040001600050110004200066245005900108260005500167300001200222650001400234650002500248650001500273IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  aHer Majesty's Nautical Almanac Office 4aThe astronomical almanac 1981cNautical Almanac Office  aWashingtonbU. S. Government Printing Officec1980  aix, N6.  aAlamanacs  aAstronomical almanac  aEphemeries