Ryden, Barbara. <br/><br/>
Introduction to cosmology / 
Barbara Ryden. 
 - [S.l.] :  Benjamin Cummings,  2003. 
 - 300 p. ;  25 cm. 
<br/><br/><label>ISBN: </label>0805389121 9780805389128 
<br/><br/><label>Dewey Class. No.: </label> / 523.1