Caratheoedory, C. <br/><br/>
Calculas of variation and partial differential equations of the first order  P.1 
by C. Caratheoedory 
 - San Francisco  Holden-Day  1965 
 - xvi, 171p. 
 - Holden-Day Series in Mathematical Physics .
<br/><br/><label>LCCN: </label>65-24560 
<br/><br/><label>Dewey Class. No.: </label>515.353  / N65.1