Applied partial differential equations  
Logan, J. David 
 - New York :  Springer,  1998 
 - xii, 181 p. :  ill. ;  25 cm. 
 - Undergraduate texts in mathematics .
<br/><br/><label>ISBN: </label>0387984410 (hardcover : alk. paper) | 0387984399 (softcover : alk. paper)