The astronomy and astrophysics encyclopedia 
edited by Stephen P. Maran and Carl Sagan                                              
 - Cambridge  Cambridge University Press  1992 
 - xxix, 1002p. 
<br/><br/><label>ISBN: </label>978-0-521-41744-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy and Astrophysics Encyclopedia<br/>Astronomy and Astrophysics Thesaurus<br/>Encyclopedia-Astronomy and Astrophysics
<br/><br/><label>Universal Decimal Class. No.: </label>3:12  / AST