The astronomical almanac for the year 1997. 
National Almanac Office                                      
 - Washington  U. S. Government Printing Office  1996 
 - [various pagings.] 
<br/><br/><label>ISBN: </label>0-11-886505-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Almanacs<br/>Ephemerides
<br/><br/><label>Universal Decimal Class. No.: </label>059:52  / AAL-97