Davies, P. C. W. <br/><br/>
The forces of nature 
P. C. W. Davies                                             
 - Cambridge  Cambridge University Press  1979 
 - viii, 246p. 
<br/><br/><label>ISBN: </label>0-521-22523-X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy and astrophysics thesaurus<br/>Gravity<br/>Relativity
<br/><br/><label>Universal Decimal Class. No.: </label>531.51  / DAV