Sneddon Ian N. <br/><br/>
Elements of Partial Differential Equations / 
Ian N. Sneddin. 
 - Dover Publications:    NewYork,  2006. 
 - vii, 327p. 
<br/><br/><label>ISBN: </label>9780486498768 
<br/><br/><label>Dewey Class. No.: </label>515.353   / SNE/E