Kaufmann, William J. <br/><br/>
Relativity and cosmology / 
William J. Kaufmann, III. 
 - 2nd ed. 
 - New York :  Harper & Row,  1977. 
 - vi, 154 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0060435720 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cosmology<br/>General relativity (Physics)