Williams W E <br/><br/>
Partial differential equations 

 - Oxford  Clarendon            1980 
 - xi,357p  cm. 
 - Oxford Applied Mathematics and Computing Science Series .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Equations
<br/><br/><label>Dewey Class. No.: </label>B33,4, M0