Hartmann, William K. <br/><br/>
Astronomy :  the cosmic journey / 
William K. Hartmann. 
 - 4th ed. 
 - Belmont, Calif. :  Wadsworth Pub. Co.,  c1989. 
 - 548 p. 
<br/><br/><label>ISBN: </label>0534095763 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy.
<br/><br/><label>Subjects--Index Terms: </label>Thiên văn học 
<br/><br/><label>Dewey Class. No.: </label>520  / HAR 1989