John Fritz <br/><br/>
Partial differential equations/ 
Fritz John 
 - 4th.ed. 
 - New york  Springer  1981 
 - x,249p.  ill.  17cm 
 - Applied mathematical sciencs .
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0387906096 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations, partial
<br/><br/><label>LC Class. No.: </label>QA1  / .A647