Levi-Civita, Tullio <br/><br/>
A simplified presentation of Einsten's unified  field equations 
<label>/ by </label> Levi-Civita, Tullio 
<label>;</label> Dougall, John 
 - London  Blackie & Son Ltd.  [1949?] 
 - 22p.  22cm. 
<br/><br/>L 
<br/><br/><label>ISBN: </label>0070043779 
<br/><br/><label>Dewey Class. No.: </label>530.11  / L