Landsberg, P.T & Evans, D.A <br/><br/>
Mathematical cosmology  introduction 
P.T. Landsberg & D.A. Evans 
 - Oxford  Clarendon Press  1977 
 - x  309 
<br/><br/><label>ISBN: </label>0198511361 
<br/><br/><label>Dewey Class. No.: </label>14.08  / LAND