Gribben, R. J. <br/><br/>
Elementary partial differential equations / 
by R. J. Gribben 
 - New York :  Van Nostrand Reinhold,  1975 
 - viii, 121 p. ;  22 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0442300557 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations, Partial