Kaufmann,William J,III. <br/><br/>
Relativity and cosmology   
by William J.Kaufmann,III 
 - New york  Harper and Row, Publishers  1973 
 - 134p. 
<br/><br/><label>ISBN: </label>060435682 
<br/><br/><label>Dewey Class. No.: </label>530.11  / N732