Gribben, R.J <br/><br/>
Elementary Partial Differential Equations 

 - New York  Van Nostrand Reinhold Company   1975 
 - Viii, 121p. 
<br/><br/><label>ISBN: </label>0442300565 
<br/><br/><label>LC Class. No.: </label>QA 377  / .G75