Bers, Lipman and others <br/><br/>
Partial differential equations   

 - Providence  American Mathematical Society  1964 
 - xv, 343p. Index. 
 - Lectures in applied Mathematics    V.3A .
<br/><br/> "Proceedings of the Summer Seminar, Boulder, Colorado, 1957"   
<br/><br/><label>ISBN: </label>0821800493 
<br/><br/><label>Dewey Class. No.: </label>515.35  / B535.PD