Sneddon, Ian N., <br/><br/>
Elements of partial differential equations 
By Ian N.Sneddon  
 - 1st ed. 
 - New York:  Dover Publication,  2006. 
 - 327 p.:    24 cm. 
<br/><br/><label>ISBN: </label>9780486452975 
<br/><br/><label>Dewey Class. No.: </label>517.38