John, Fritz  . <br/><br/>
Partial differential equations /  
by Fritz John. 
 - 4th ed. /  
 - New York :   Springer-Verlag ,   1982 
 - x, 249p :  
<br/><br/><label>ISBN: </label>978-81-8489-213-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations, Partial
<br/><br/><label>Dewey Class. No.: </label>B334  / M2;1