Fritz John <br/><br/>
Partial Differential Equations 

 - 4 
 - New York  Springer  1982 
 - x, 249 
 - Applied Mathematical Sciences  1 .
<br/><br/><label>ISBN: </label>9781468493351 
<br/><br/><label>Dewey Class. No.: </label>515.353  / JOH/P