Epstein, Bernard.  x <br/><br/>
Partial  differential equations;  an introduction 

 - x 
 - N. Y.  McGraw- Hill  1962 
 - x, 273p 
<br/><br/>
<br/><br/><label>ISBN: </label>x  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Equations Equations 
<br/><br/><label>Dewey Class. No.: </label>517.38/ EPP