Silberstein Ludwik <br/><br/>
Size of the universe:Attempts at a determination of the curature radius of spacetime 
Silberstein Ludwik 
 -  1930 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>25256 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B9:621, G0