Kaufmann, William J. <br/><br/>
Discovering the universe / 
William J. Kaufmann. 
 - 3rd ed. 
 - New York :   W. H. Freeman,   1992. 
<br/><br/>Bibliography. 
<br/><br/><label>ISBN: </label>0716722968 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy<br/>Cosmology
<br/><br/><label>LC Class. No.: </label>QB43.2  / KAU 1992