Murdin, Paul. <br/><br/>
Encyclopedia of astronomy & astrophysics / 
Paul Murdin. 
 - [S.l.] :  Grove's Dictionaries,  2001. 
 - 2500 p. ;  45 cm. 
<br/><br/><label>ISBN: </label>1561592684 9781561592685 
<br/><br/><label>Dewey Class. No.: </label>520.321