Copson E T <br/><br/>
Partial differential equations 

 - Cambridge  Cambridge Universirt Press         1975 
 - 280p.  cm. 
<br/><br/><label>Standard No.: </label>22956 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B334, L5