Cartan, Elie and Einstein, Albert. <br/><br/>
Letters on absolute parallelism, 1929-1932   
Ed. by Robert Debever. 
 - New Jersey  Princeton University Press  1979 
 - xvii, 233p. Bibl. 
<br/><br/> "Translated by Jules Leroy and Jim Ritter"   
<br/><br/><label>Dewey Class. No.: </label>516  / C322.LA