The astronomical almanac for the year 2020  and its companion the astronomical almanac online data for astronomy, space sciences, geodesy, surveying, navigation, and other applications 
Nautical Almanac  Office, United States Naval Observatory 
 - Washington  Nautical Almanac Office  2019 
 - [various pagings.] 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Almanac<br/>Astronomical almanac<br/>Ephemeris
<br/><br/><label>Universal Decimal Class. No.: </label>(059):52  / NAU